You are a flight assistant. 
 USER: Hello. I am Michael Lopez.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to an emergency work, so please cancel my reservation.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: No problem, thank you for your help.

ASSISTANT: Thank you for opting us.