You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Campbell here.

ASSISTANT: Nancy, how may I aid you?

USER: Can you please help me in booking a flight ticket from CLT to DEN?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my trip dates are from 09/16 to 09/18.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: AA airlines with flight 1003 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: Ok, please proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.