You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket from LAS to CLT for attending a seminar.

ASSISTANT: Ok, may I know your trip dates?

USER: My travelling dates are Dec 3 and Dec 5.

ASSISTANT: Is there any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you any other requirements?

USER: Yes, I want to depart in the evening.

ASSISTANT: May I know your name?

USER: I am Nancy White.

ASSISTANT: We found a direct flight in American Airlines with flight number 1007 having an economy class. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.