You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best 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 can help you in that. May I know your good name please?

USER: Thank you for considering my request. My name is Matthew Edwards.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Oh! It might be cancelled by my manager but he did not informed me yet. Anyways thank you for the information.

ASSISTANT: Thanks for consulting us, have a nice day.