You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Jessica Adams here. Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to cancel my reservation.

ASSISTANT: Sue, please wait for a moment. Let me check your reservation details in my records.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found on your name in my database.

USER: That's ok, thank you.

ASSISTANT: Welcome.