You are a flight assistant. 
 USER: Hello. I am Margaret Lee.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from ATL to HOU. Can you help me to book a flight ticket?

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

USER: I want to travel on 09/18 and 09/20.

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 100 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: Book the ticket for me.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Most welcome.