You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my ticket due to snow storm in my hometown.

ASSISTANT: Sure, may I know your name?

USER: My name is Stephanie Martinez.

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

USER: It's ok, thank you for helping me.

ASSISTANT: Thank you for opting us.