You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Katherine Campbell.

ASSISTANT: Please inform me, In what way can I help you for the day?

USER: I need you to book me a flight ticket to reach Boston to serve orphan children at Home For Little Wanderers. Could you please help me in that?

ASSISTANT: Sure, that's a good idea, I will help you with that.

USER: Thank you.

ASSISTANT: When would you like to fly?

USER: I want to fly on 06/22.

ASSISTANT: In which international airports do you want to take off and land on?

USER: I want to take off from best international airport in Las Vegas, NV - LAS and land on Boston, MA - BOS.

ASSISTANT: When do you want to return from Boston?

USER: I would like return on 06/24.

ASSISTANT: Do you prefer a lay by in between of your journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: How much can you afford in booking your flight ticket?

USER: I can afford up to 500 in savings.

ASSISTANT: Thank you for your details, please hold a moment.

USER: Sure.

ASSISTANT: Thank you for your precious time. We found a flight 1016 in Frontier airline with a fare of 100. Shall I proceed with a connecting flight?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been reserved in class economy flight and your ticket has been sent to your mail id with in a couple of days.

USER: Thanks for booking.

ASSISTANT: Thank you for reaching us.