You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I need to do some changes in my previous flight booking that I have booked a ticket with wrong airport codes, can you please help me with that?

ASSISTANT: Sure, I will help you in changing the reservation. May I know your name please?

USER: Sure, I am Mary Jackson.

ASSISTANT: Sorry, I could not found any reservations on your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.