You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Patrick Miller. Can you please book a flight ticket from DTW to DCA?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are 03/18 and 03/20.

ASSISTANT: Ok, wait a moment please.

USER: Ok, sure.

ASSISTANT: There is a flight in Frontier airline with price 200, can I book it?

USER: Ok, you can book it.

ASSISTANT: Your ticket has been booked with flight number 1000.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.