You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Jerry Adams here. Actually, I want to cancel my recent reservation due to some problems, can you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Its ok, take your own time.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for contacting us.