You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Edward Nelson here.

ASSISTANT: Nelson, how can I assist you today?

USER: I want to cancel my ticket as I am sick.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Nelson, no active reservation found by your name.

USER: It's ok, thank you.

ASSISTANT: My pleasure, have a nice day.