You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: I am looking to book a flight ticket from JFK to CLT. Can you help me for that?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My travelling dates are Apr 23 and Apr 25.

ASSISTANT: May I know your name for further process?

USER: My name is John Smith.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I don't have any time limit.

ASSISTANT: Do you have any another specifications?

USER: I prefer to book a single connecting flight.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Southwest airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Ok, proceed for booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1020.

USER: Thank you for booking.

ASSISTANT: You are welcome John Smith.