You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to modify my reservation as I have done with the wrong airport codes. Can you help me with that?

ASSISTANT: Sure, I am glad to help you. May I know your name?

USER: Thank you for your concern. My name is Anna Carter.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Not a problem, anyways thank you for checking my reservation.

ASSISTANT: Thank you for choosing us.