You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: As I am a scientist, I want to attend science festival with my students at Denver, DEN. Can you help me to book a ticket from Atlanta, ATL?

ASSISTANT: Sure, do you have any price limit?

USER: Price should not cross 5000.

ASSISTANT: Can I have your travelling dates?

USER: Journey dates are 06/09 and 06/11.

ASSISTANT: May I know your good name please?

USER: Lisa Moore here.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thanks for waiting, we are pleased to inform you that we have found an AA airline, flight number-1008 connections-1 and price limit is 100. Shall I book your flight ticket?

USER: Go ahead.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for approaching us.