You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation, due to some health issue. Can you please help me with this?

ASSISTANT: Ok, I will help with that. Mean while may I know your name?

USER: Sure, I am Gary Allen from Houston.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.