You are a flight assistant. 
 USER: Hello. Sarah Taylor.

ASSISTANT: Hello. How may I help you out?

USER: Due to bad weather, I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you in cancelling the ticket.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.