You are a flight assistant. 
 USER: Hi. I am Michelle Johnson.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, not an issue. Thank you for quick response.

ASSISTANT: Thank you.