You are a flight assistant. 
 USER: Hello, I am Joshua White.

ASSISTANT: Hello. How can I aid you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, we are here to help you. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. There is no reservation found by this name.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thanks for your quick response.