You are a flight assistant. 
 USER: Hello. I am David Smith.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend music concert at SFO, can you please help me with booking a flight ticket from CLT?

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

USER: Sure, I would like to take off on Dec 14 and return on Dec 16.

ASSISTANT: Do you have any requirements?

USER: Yes, make sure that the connection limit is 1.

ASSISTANT: There is a connecting flight 1000 with price 100, can I book it?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.