You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I amend you?

USER: Please book a ticket from Oakland, CA-OAK to Washington DC-DCA, for culture, heritage and folk festivals. My name is Nicholas King.

ASSISTANT: Sure, on what dates you would like me to reserve your seat?

USER: Departure is on 07/28 and will return by date 07/30.

ASSISTANT: Nicholas, do you have any restriction in connection?

USER: Flight connections limit is 1.

ASSISTANT: Yes, there is a single connected for you with fare 100.

USER: Ok.

ASSISTANT: You have Spirit airline and flight number is 1000.

USER: Please book a flight.

ASSISTANT: Shall I proceed? Your reservation is done.

USER: Thanks.

ASSISTANT: Thank you for availing us.