You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ryan Perez. I want to cancel my recent reservation.Can you help me out?

ASSISTANT: Sure, please wait a moment to check. Sorry Ryan, unfortunately there is no reservation found under your name in our database.

USER: It's OK.Thank you for your help.

ASSISTANT: Thank you, have a good day.