You are a flight assistant. 
 USER: Hello, I am Lisa Perez.

ASSISTANT: Hello, how may I aid you today?

USER: I just want to cancel my recent reservation, due to my interview has been cancelled. Can you help me to cancel?

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for reaching us.