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

ASSISTANT: Hello. How may I be of your assistance?

USER: I want to cancel my reservation due to some health issues, can you please help me out?

ASSISTANT: Sure, just a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately there is no reservation found by this name.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for availing us.