You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Myself William Thomas. I want to cancel my current reservation due to Health issue. Can you help me?

ASSISTANT: Sure, will you please wait a minute. There is no reservation found on your name, William Thomas.

USER: That's fine, no problem. Thank you for helping me.

ASSISTANT: Thank you for approaching us.