You are a flight assistant. 
 USER: Hi. I am Charles Lewis.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation due to bad health condition, will you help me?

ASSISTANT: Sure, please be on hold.

USER: Sure.

ASSISTANT: Sorry, we did not find any reservation in your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for availing with us.