You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: As I am a scientist, I want to attend science festival with my students at Dallas. Can you do the reservation?

ASSISTANT: Sure, we are mirthful to help you. May I know when you have planned to travel?

USER: Journey dates are 07/17 and 07/19.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My airport codes are LAS-DFW.

ASSISTANT: On which name I need to book your ticket?

USER: Stephen Allen here.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in UA airline has fare 200. Shall I proceed for booking?

USER: Go ahead.

ASSISTANT: Your booking has been confirmed with flight number 1021.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.