You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket from Denver, DEN to reach Oakland, OAK?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from May 16 to May 18.

ASSISTANT: Do you have any connection limit?

USER: Usually I prefer direct flight, If it is not there please proceed with single stopover flight.

ASSISTANT: Is there any preferences?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: My name is Margaret Roberts.

ASSISTANT: We found direct flight 1002 in AA airlines and price 100, Shall I proceed?

USER: Sure, you can proceed for booking.

ASSISTANT: Your booking is done.

USER: Thanks for your help.

ASSISTANT: Thank you.