You are a flight assistant. 
 USER: Hello, I am Amanda Williams.

ASSISTANT: Hello, how may I be there for you?

USER: Due to my health problem I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure. Let me check the reservation list and get back to you.

USER: Ok.

ASSISTANT: We did not find any reservation by the name you mentioned above.

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

ASSISTANT: Thank you for reaching us.