You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Benjamin Turner. Can you help me for booking a flight ticket from WA-SEA to NY-EWR?

ASSISTANT: Sure, I can help you with that. There is flight available on 11/29 based on your requested location.

USER: But my preferable dates are 11/30 and 12/02.

ASSISTANT: Yes, there is flight available on your requested dates. Shall I book the ticket?

USER:  please book this flight ticket.

ASSISTANT: OK, your ticket is booked with Spirit airline.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a safe journey.