You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I want to cancel my recent reservation, due to bad weather conditions. Can you please help me with cancellation?

ASSISTANT: Sure, I'll try to help you in cancellation. Please share your name to check the reservation list.

USER: Thanks for accepting my request, My name is Helen Williams.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: Ok, thanks for your time.

ASSISTANT: Thank you for approaching us.