You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Samantha Evans, I would like to cancel my recent reservation due to cancel of my trip. Could you please help?

ASSISTANT: Sure, we will help you. Please wait a moment, I will check your details and let you know.

USER: Sure.

ASSISTANT: Sorry to inform you that no reservation exist on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.