You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can assist you today?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Surely, I will help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Eric Perez.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, I have checked the reservation list but no reservation was found on your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for visiting us.