When agent is online customer skip the name or email on chat bot not creating ticket automatically ?

we are suing zendesk support chat and talk .

When agent is online and offline we are enabled preChatFormFieldConfiguration and isAgentAvailabilityEnabled  

referred Link: https://developer.zendesk.com/documentation/classic-web-widget-sdks/chat-sdk-v2/ios/customizing_the_look/ 

preChatFormFieldConfiguration form filed name given required and other hidden 

ISSUE 1: At time customer enter on chat screen started answer bot asked question answer after getting "thank you " Or skip button click  nothing happen customer waiting for long time .its should not connecting agent at time after entering some text only connecting agent 

Screen 1

Screen 2 :                                                                                              

 When customer again enter some text only creating ticket and receiving agent chat pop . its not work automatically with out enter any text customer .

Some user not continue chat after thank you message or after skip.

someone can give the solution .how can i achieve it 

    func buildUI() throws -> UIViewController {

        // Support Chat initial

      //  self.resetData()

        Chat.instance?.clearCache()

        //let UserName = "\(UserDefaults.standard.userName ?? "")".capitalized

        //let UserEmail = "\(UserDefaults.standard.userEmail ?? "")"

        let chatAPIConfiguration = ChatAPIConfiguration()

     // chatAPIConfiguration.department = "IOS_iSabel"

         //chatAPIConfiguration.visitorInfo = VisitorInfo(name: "", email: UserEmail, phoneNumber: "")

        Chat.instance?.configuration = chatAPIConfiguration

        let chatConfiguration = ChatConfiguration()

        chatConfiguration.isAgentAvailabilityEnabled = true

        let formConfiguration = ChatFormConfiguration(name: .required, email: .hidden, phoneNumber: .hidden, department: .hidden)

    chatConfiguration.isPreChatFormEnabled = true

      chatConfiguration.preChatFormConfiguration = formConfiguration

        let messagingConfiguration = MessagingConfiguration()

//        messagingConfiguration.name = "Chat Bot"

//        messagingConfiguration.isMultilineResponseOptionsEnabled = true

        //let answerBotEngine = try AnswerBotEngine.engine()

//        let supportEngine = try SupportEngine.engine()

        let chatEngine = try ChatEngine.engine()

//        chatEngine.configuration.isPreChatFormEnabled = true

//       return try Messaging.instance.buildUI(engines:[answerBotEngine, supportEngine, chatEngine], configs: [messagingConfiguration])

       return try Messaging.instance.buildUI(engines:[chatEngine], configs: [messagingConfiguration, chatConfiguration])

    }