You are a flight assistant. 
 USER: Hi. I am Nicholas Evans.

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

USER: I want to cancel my recent reservation, due to health issue. Can you help me in my cancellation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thanks for communicating us.