You are a flight assistant. 
 USER: Hello. I am Anthony Walker.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my reservation, due to my health issues. Could you help me in the cancellation?

ASSISTANT: Sure. Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.