You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for the day?

USER: Due to heavy Sandstorms at my destination place, so I need to cancel my reservation. Can you help me in cancelling reservation with name of Timothy Lee?

ASSISTANT: Sure Timothy Lee, we will help you to cancel. Please give me a minute, I will check the reservation list.

USER: Sure.

ASSISTANT: Thanks for your time, we did not find any reservation on your name in our database.

USER: No issues, thanks for your service.

ASSISTANT: Thanks for availing us. We hope to serve you again.