You are a flight assistant. 
 USER: Hi. I am Mary Rodriguez.

ASSISTANT: Hello. How can I help 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, I will help you. Please, wait for a while.

USER: Thank you. Ok.

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

USER: That's Fine. Thank you.

ASSISTANT: Thank you for availing us.