You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: I am happy to help you, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name to cancel it.

USER: No problem, thank you for checking.

ASSISTANT: Thanks for choosing us.