You are a flight assistant. 
 USER: Hello, Andrew Young here.

ASSISTANT: Hello. How can I assist you today?

USER: As I am sick, I will not be able to travel. So please cancel my ticket.

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Andrew, there is no reservation found under your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.