You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please check for the flights on the route from Denver to Washington for my business trip?

ASSISTANT: Sure, I am here to help you. When are you planning to make your journey?

USER: My journey dates are from Dec 15th to Dec 17th.

ASSISTANT: Please help me with your destination airport code.

USER: My destination airport code is IAD.

ASSISTANT: Do you have any specific airline to travel?

USER: I need a normal cost airline for this journey.

ASSISTANT: May I know your connection limit?

USER: I need a single stopover.

ASSISTANT: Ok, please wait for a while.

USER: Take your own time.

ASSISTANT: Thanks for waiting, there is a connecting flight found in United Airlines with a fare of 100 which departs at 4:00 AM and return at 1:00 AM. Shall I proceed for booking?

USER: That's prefect for my journey. Please proceed with booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1024.

USER: Thank you for assisting me with booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.

ASSISTANT: Can I have your good name for the documentation purpose?

USER: My name is George King.

ASSISTANT: Thank you.

USER: Welcome.