You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am John Allen. I would like to book a ticket from IAD to ATL. Can you please help me out to book a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to travel on 08/25 and return on 08/27.

ASSISTANT: Thanks for waiting. I have found Delta airlines which flies with one connection.

USER: Make sure my price limit is 200.

ASSISTANT: It will cost you 100.

USER: Yes, you can book it.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: That's fine. Thank you for your help.

ASSISTANT: Ok, thanks for reaching to us.