You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to celebrate my birthday in New York, so please book a flight ticket from OAK to EWR.

ASSISTANT: Can I know your travelling dates?

USER: I want to fly on May 21, return on May 23.

ASSISTANT: Do you have any preference?

USER: I want a economy class flight ticket. And I want a flight with one connection.

ASSISTANT: Connecting flight can be booked with airline Spirit for price 100 having flight number 1016.

USER: Ok, proceed to booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Can I know your name?

USER: My name is Benjamin Harris.

ASSISTANT: Thank you.