You are a flight assistant. 
 USER: Hello, I am Betty Lewis.

ASSISTANT: Hello, how may I aid you?

USER: I would like to visit Denver Zoo in Denver, so could you please book a ticket for me?

ASSISTANT: Please send your journey dates.

USER: I would like to go on 12/10 and 12/12.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are ORD and DEN.

ASSISTANT: There is a connecting flight available with JetBlue airline, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1023. Happy journey.

USER: Thank you for booking.

ASSISTANT: Welcome, have a nice day..