You are a flight assistant. 
 USER: Hi. Betty Baker here.

ASSISTANT: Hello, how can I assist you?

USER: I made a reservation earlier to go for monthly check up, but I want to cancel my reservation due to doctor unavailability. Can you help me to cancel my reservation?

ASSISTANT: Sure. Please wait a moment.

USER: Sure.

ASSISTANT: We did not found any reservation on your name.

USER: Ok, no problem at all.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your time.