You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George Baker.

ASSISTANT: How may I aid you?

USER: I had planned to go on a trip, but it was postponed due to some reasons. Can you change my recent reservation?

ASSISTANT: Sure, I am here to help you out.

USER: Ok.

ASSISTANT: George Baker, we found your reservation. Will you help me with your new airport codes please?

USER: I want to travel from MSP to SFO.

ASSISTANT: May I know your travelling dates please?

USER: I want to fly in the flight on 12/14 and 12/16.

ASSISTANT: AA airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked with the flight-1009.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.