You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joseph Rodriguez here.

ASSISTANT: How may I assist you?

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

ASSISTANT: Ok. Please wait a moment I will check the reservation list and I will inform you.

USER: Sure.

ASSISTANT: Sorry Joseph Rodriguez, there is no active reservation on your name.

USER: No problem, thank you.

ASSISTANT: Thank you.