You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Please share your name to proceed further?

USER: My name is Kimberly Hall.

ASSISTANT:  I found your reservation successfully please share your trip specifications.

USER: I would like to take off on Mar 14 and return on Mar 16.

ASSISTANT: May I know your nearest airport codes?

USER: My source airport code is DFW and the destination airport code is SFO.

ASSISTANT: Do you have any connecting preferences?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: South West Airlines is providing he connecting flight on this route and the fare of 100.

USER: Yes, please proceed with the booking.

ASSISTANT: Your reservation done for the flight 1021.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.