You are a flight assistant. 
 USER: Hi. I am Eric Edwards.

ASSISTANT: Hello, how may I help you today?

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, please wait for a moment.

USER: Ok.

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

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for opting us.