You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a ticket from LAS to IAH. Could you book a ticket?

ASSISTANT: Sure, can you please provide your journey dates?

USER: Travelling dates are June, 21 and June, 23.

ASSISTANT: Do you have any specifications to be met?

USER: I prefer direct flight.

ASSISTANT: Are you looking for any preferred class?

USER: I am comfortable with any class preference.

ASSISTANT: Can I have your name?

USER: My name is Joseph Thomas.

ASSISTANT: We have found a direct flight of JetBlue airlines, flight number-1014 class-economy and fare is 100. Shall I proceed with the booking?

USER: Please book a flight.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.