You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Elizabeth Davis here. I was planning to visit Las Vegas, so I booked a ticket few days ago. Now I want to cancel my reservation can you help me?

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

USER: Ok, I will be waiting for your response.

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

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for contacting us, have a great day.

USER: You are most welcome.