You are a flight assistant. 
 USER: Hello,.

ASSISTANT: By what way, Can I be useful to you?

USER: I am Donald Jones. I am looking for making my reservation to Denver, for my brother's engagement. Can you help me with booking fight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: On 01/01, I want to start my journey & return on 01/03.

ASSISTANT: Please mention your airport codes?

USER: My boarding is from Washington, DC - IAD, to reach CO - DEN.

ASSISTANT: Do you need any lay by in between journey?

USER: Yes, I need a connection.

ASSISTANT: Thank you for your time, we have found a UA airline, flight number-1001 connections-1 and ticket fare is 100.

USER: It is perfect, proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your extendable support.

ASSISTANT: Thank you. Wish you a safe journey in UA airline.