You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Mary Martin.

ASSISTANT: How can I help you?

USER: I want to cancel my recent reservation, I made yesterday.

ASSISTANT: Ok. Give me a minute, I will check it.

USER: I got some important event to attend suddenly, so please help me. Sure, take your time.

ASSISTANT: Sure, I am happy to help you. I am sorry to say that there is no reservation found.

USER: No issues with that. Thanks for checking.

ASSISTANT: Welcome, have a nice day.