You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: This is Daniel Robinson. I want to cancel my recent reservation. Please help me in cancelling process.

ASSISTANT: Sure Daniel. Please wait a moment to check.

USER: OK.

ASSISTANT: Sorry Daniel, unfortunately there is no reservation found under your name.

USER: It's OK, thank you for your quick response.

ASSISTANT: Thank you, have a good day.