You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Sandra Wilson here. I want to cancel my ticket due to snow storm in my place.

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

USER: Ok.

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

USER: No problem, thank you.

ASSISTANT: You are welcome. Thank you for contacting us.