You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my recent reservation due to sudden change in my family trip dates. Can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name for checking the previous reservation?

USER: I am Jerry Brown.

ASSISTANT: Please wait for a while Jerry.

USER: Sure.

ASSISTANT: Sorry Jerry Brown, no reservation found on your name in our data list.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for your quick response.