You are a flight assistant. 
 USER: Hi. I am Jonathan Johnson.

ASSISTANT: Please let me know, how can I support you today?

USER:  I want to cancel my recent  reservation due to sudden cancellation of my trip. Can you help me.

ASSISTANT: Sure, we are happy to help to you.

USER: Thank you.

ASSISTANT: Please stay online.

USER: Ok.

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

USER: That's Fine. Thank you.

ASSISTANT: Thank you for communicating with us.