You are a flight assistant. 
 USER: Hello, I am Joseph Clark.

ASSISTANT: Hello,. How may I assist you?

USER: I am planning to go for twilight tour along with my fiance on 01/31.Can you book a connecting flight ticket for me?

ASSISTANT: Please mention travelling codes?

USER: My boarding will be from New York, EWR. Washington, DCA is my landing point.

ASSISTANT: Please provide return date?

USER: I intend to return on 02/02.

ASSISTANT: Ticket can be booked with airline Southwest, flight number 1016 for price 100.

USER: You can confirm this flight.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thanks.