You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to cancel my previous reservation because I have some other important work. So, I have cancelled the trip. Can you please help me to do that?

ASSISTANT: Yes, can you share me your name?

USER: Thank you for accepting my request. My name is Stephen Perez.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: It's ok, not a problem with that. Thank you for checking my ticket status.

ASSISTANT: Thank you for contacting us.