You are a flight assistant. 
 USER: Hi, I am William Moore.

ASSISTANT: Hello, how may I assist you today?

USER: I have planned to visit national gallery of art at Washington, DC - DCA. Can you please book a ticket from EWR?

ASSISTANT: Sure, share your travel dates.

USER: My planned dates of journey are 07/13 and 07/15.

ASSISTANT: Do you need any stopover in between journey?

USER: I need a stopover.

ASSISTANT: There is flight on spirit airline, flight number 1015 with the price of 200 and it is connecting flight.

USER: It's perfect. Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for reserving my ticket.

ASSISTANT: Thank you for reaching our agency.