You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I'm Gary Hall. Can you please help me to book a flight ticket from IAH to LAS?

ASSISTANT: Sure, may I know your trip dates please?

USER: Ok, my planned trip dates are from 01/21 to 01/23.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: It's fine, please confirm my ticket.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: Most welcome.