You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation.Please help me to cancel it.

ASSISTANT: Sure, may I know your name to check with the current status and revert you?

USER: Sure, my name is Ryan Robinson.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We could not find any reservation by the name you provided.

USER: No problem, thank you for your time.

ASSISTANT: Thank you for opting us.