You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Dennis Collins, I want to meet my brother on his birthday. Can you please help me to book my flight ticket from DEN to IAD?

ASSISTANT: Sure, I will try to help you in booking a flight ticket but I need your travel dates.

USER: Sure, I would like to depart on 11/26 and return on 11/28.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I found a flight with price 200 and connection is 1, shall I proceed?

USER: That's perfect! You can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked with flight-1002.

USER: Thank you so much for your help.

ASSISTANT: My pleasure.