You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Mary Moore. I want to cancel my reservation due to the heavy snow fall at my location, so I can make my trip. Can you help me with that?

ASSISTANT: Ok Mary, please wait for a while.

USER: Ok, please take your time.

ASSISTANT: Mary, there is no reservation found under your name in our database.

USER: That's ok, thank you for your assistance.

ASSISTANT: Thank you for choosing us.