You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight to meet my sister, Can you book a flight to CLT?

ASSISTANT: Sure, may I know your planned travelling dates?

USER: I will fly on Apr 29 and return on May 01.

ASSISTANT: May I know your source airport code?

USER: My source point is SFO.

ASSISTANT: May I know your class preference?

USER: I am fine with any class.

ASSISTANT: May I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any specific time preference for journey?

USER: No.

ASSISTANT: May I know your good name for further process?

USER: My name is Mary Clark.

ASSISTANT: Southwest airline is providing a connecting flight of fare 100 with economy class, shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1001.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.