You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Mark Allen.

ASSISTANT: How can I help you?

USER: I am planning to attend convocation meeting at DFW, can you please help me with booking a flight ticket from CLT?

ASSISTANT: Sure, on which dates you like to travel?

USER: Sure, I would like to take off on 03/15 and return back on 03/17.

ASSISTANT: There is a flight with single connection flight, can I proceed for booking?

USER: Yes, please proceed with the booking if the price limit does not exceed 200.

ASSISTANT: Your booking is done in 1003 flight.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.