You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Brandon Robinson. I want to book a ticket from LAS to ORD, can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are Dec 23 and Dec 25.

ASSISTANT: Do you need a halt in between your journey?

USER: I need a single halt.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.