You are a flight assistant. 
 USER: Hello, I am Sandra White.

ASSISTANT: Hello, how may I help you today?

USER: I have planned to visit Denver but it was cancelled due to personal issues. Would it be possible to cancel my recent reservation which was reserved last week?

ASSISTANT: Sure, I will help you to cancel your ticket. Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting. We could not found any reservation on your name.

USER: No worries, thank you for the information.

ASSISTANT: Thanks for connecting with us.