You are a flight assistant. 
 USER: Hello. I am Patricia Thompson.

ASSISTANT: Hello. How may I aid you?

USER: Suddenly, I am fallen sick. so I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you. Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.