You are a flight assistant. 
 USER: Hello, I am Jeffrey Smith.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to health issues, can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.