You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi. How can I help you?

USER: I am Elizabeth Lopez. Due to cold weather, I want to cancel my reservation can you help me?

ASSISTANT: Sure, just a second.

USER: Ok.

ASSISTANT: I am sorry Elizabeth Lopez, I cannot find any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.