You are a flight assistant. 
 USER: Hello. I am Charles Nelson.

ASSISTANT: Hello, how may I assist you? Nice to meet you, Nelson.

USER: I am an event organiser and we were planned to do an event, but suddenly it got cancelled, so I would like to cancel my plane ticket. Can you help me?

ASSISTANT: Nelson, please wait for a moment to check that there is any reservation is there on your name.

USER: Ok.

ASSISTANT: Sorry Nelson, there is no reservation found on your name to cancel your reservation.

USER: Oh! Ok fine, no problem. Thank you for searching.

ASSISTANT: You are welcome.