You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Collins here.

ASSISTANT: How may I assist you?

USER: Can you cancel my flight ticket reservation?

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

USER: Ok.

ASSISTANT: Wait a moment please. Ryan Collins, we haven't found any reservation under your name in our database.

USER: Not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.