You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I abet you?

USER: I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods. Can you please be my helping hand in cancelling reservation?

ASSISTANT: Sure, I am ravish to help you.

USER: Thank you.

ASSISTANT: May I know your good name to check reservation?

USER: Sure. I am George Mitchell.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for being patience. I am here to inform you that, there is no reservation found with your specified name.

USER: Ok, I think my grand father already cancelled my reservation.

ASSISTANT: Ok.

USER: Thank you for your kind information.

ASSISTANT: Thank you for approaching us.