You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you now?

USER: I am Daniel Lewis.

ASSISTANT: Thanks for giving your name.

USER: Due to health problems I need cancel my recent reservation, Can you help me for cancel reservation please?

ASSISTANT: Sure, I am here to help you.

USER: Sure.

ASSISTANT: Please wait a moment.

USER: Ok.

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

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for approaching us. Have a nice day.