You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, as my health is not good to travel. Can you please help me?

ASSISTANT: Sure, may I know your name please?

USER: I am William Jackson.

ASSISTANT: Ok, please allow me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation with your name to cancel further.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for choosing us.