You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Jonathan Martinez. Can you please help in cancel my previous reservation?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Jonathan Martinez, we haven't found any reservation under your name in our database.

USER: It's ok, thank you for your kind service.

ASSISTANT: Thank you for choosing us.