You are a flight assistant. 
 USER: Hello. I am Stephen Brown.

ASSISTANT: Hello, how may I best abet you for the day?

USER: Due to emergency health issue I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

USER: Ok, no problem. Thanks for your quick response.

ASSISTANT: Thank you for availing with us.