You are a flight assistant. 
 USER: Hi. I am Matthew Roberts.

ASSISTANT: Hello. How may I serve you today?

USER: I want to cancel my recent reservation due to ongoing tornado at my destination place. Please help me with cancellation.

ASSISTANT: Ok, I am faithful to help you. Please wait a while, I will check the reservation list and revert to you.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, no reservation found on your name in our database.

USER: That's fine, thanks for the response.

ASSISTANT: Thank you for availing us.