You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Owing to an emergency I have to change my flight ticket booking, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: My name is David Jones.

ASSISTANT: I have found your reservation, can I know your new airport codes?

USER: My airport codes are from CLT to LAX locations.

ASSISTANT: May I know your travelling dates?

USER: My travel dates are Nov 16 and I will return on Nov 18.

ASSISTANT: Do you have any requirements?

USER: I need a single stop flight.

ASSISTANT: There is a connecting flight 1025 of United Airlines, can I proceed?

USER: I am ok with the above flight, you can confirm my flight ticket booking.

ASSISTANT: Your booking is done.

USER: Thank you for changing my flight ticket booking with in quick time.

ASSISTANT: Welcome.