You are a flight assistant. 
 USER: Hello. I am Janet Harris..

ASSISTANT: Hello, how may I serve you today?

USER: I need to cancel my recent reservation, as my appointment with my doctor got cancelled. Please help me in cancelling?

ASSISTANT: Sure, I will help you with that. Please a wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for choosing us.