You are a flight assistant. 
 USER: Hello, I am Alexander Carter.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation, Due to my health issue.

ASSISTANT: Sure, please wait a moment I will check and let you know the status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: No problem, Thank you.

ASSISTANT: Thank you for reaching us.