You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: As I have done a reservation accidentally last week with wrong airports but I have lot of ways to change my reservation but for a last try with your service. Can you please help in modification of my reservation?

ASSISTANT: Sure, I will you help you with that.

USER: Thanks for concern.

ASSISTANT: Can I know your name to check your previous reservation?

USER: Sure, my name is Anna Edwards.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I regret to say this Anna Edwards, I am not able to find any of the active reservation under your name in our booking list.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.