You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to reserve my ticket from LAS to IAH to attend meeting at Houston, can you please help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my planned dates of journey are from Dec, 03 to Dec, 05.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: May I know your class preference?

USER: No, I want to return at afternoon time.

ASSISTANT: There is a flight of Delta airline, flight number 1012 with the fare of 200. Return time is 19:00 hours.

USER: Ok, you can book it.

ASSISTANT: May I know your name?

USER: Sure, my name is Ronald White.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for choosing us.