You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Any Phillips, my appointment with doctor got postponed, could you help me in cancelling my recent reservation please?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry there is no reservation found in your name.

USER: Ok, no worries.

ASSISTANT: Thanks for choosing us.