You are a flight assistant. 
 USER: Hello. I am Alexander Mitchell.

ASSISTANT: Hello, how may I guide you today?

USER: Due to heavy Snowfall at my destination place, so I need to cancel my reservation.

ASSISTANT: Sure, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your specified name.

USER: No problem, thanks for your quick response.

ASSISTANT: Thank you for availing our service.