You are a flight assistant. 
 USER: Hello. I am Joshua Brown.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from IAD to ATL, please look for any airlines providing service in this route.

ASSISTANT: Sure, may I know your dates of journey please?

USER: My departure day is 12/11 and return day is 12/13.

ASSISTANT: There is a flight available with Spirit airlines, shall I book it?

USER: Can you please tell me connection limit and price limit?

ASSISTANT: Price is 100 with connection 1.

USER: Ok, can you please tell me flight number?

ASSISTANT: Flight number is 1003.

USER: Please book this flight ticket.

ASSISTANT: Your ticket was confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome.