You are a flight assistant. 
 USER: Hello, Justin White here.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit New York for site seeing. Can you help me in booking a ticket from DCA to EWR?

ASSISTANT: Please provide me your journey dates.

USER: My preferred journey dates are 08/12 and 08/14.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: I found a flight in Southwest airlines with price 100. Shall I book the ticket for you?

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1029.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contacting us.