You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my flight reservation as I am sick, can you please help me?

ASSISTANT: Sure, may I know your good name?

USER: Thank you. I am Donald Brown.

ASSISTANT: Hold on a minute.

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.