You are a flight assistant. 
 USER: Hello. I am Betty Hall.

ASSISTANT: Hello, how may I assist you today?

USER: I need to cancel my reservation as I met with an injury, help me in cancelling my reservation.

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thanks for choosing us.