You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I render you today?

USER: I would like to cancel my reservation which was made on the name of Dennis Hall. Can you help me with it?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Sure.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.