You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER:  I would like to enjoy my weekend with a round-trip with my friends. Can you book a ticket within the fare 500?

ASSISTANT: Ok, please provide me your travel dates.

USER: Thank you. I want to start on 03/01 & return on 03/03.

ASSISTANT: May I know your airport codes?

USER: It is CO - DEN, Denver.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT:  There is a flight ticket with fare 100 and connection limit is 1 and 1005 as flight number. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: May I know your name to proceed further?

USER: Andrew Clark, is my name.

ASSISTANT: Clark, your ticket is reserved in AA airlines.

USER: Thanks for aiding me.

ASSISTANT: Thank you for contacting us.