You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to fly from Las Vegas, will you please aid me in booking a flight ticket to IAH?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are Feb 6th and Feb 8th.

ASSISTANT: May I know your class preference?

USER: No, I don't have any class.

ASSISTANT: Ok, please provide your source airport code.

USER: My source code is LAS.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: Yes, I will prefer connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we found a direct flight in 1019 Delta Airlines with a fare of 100. Can I proceed?

USER: Please reserve it.

ASSISTANT: May I know your name?

USER: George Lewis.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.