You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

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 am happy to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Can I have your name please to check your reservation status?

USER: Sure, my name is Robert Perez.

ASSISTANT: Ok, please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Robert Perez, no reservation has found under your name to change.

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

ASSISTANT: Thank you for choosing us, have a good day.