You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jonathan Mitchell.

ASSISTANT: How may I help you today?

USER: I need to cancel my reservation due to some issues, can you help me out?

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your own time.

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

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.