You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Jeffrey Roberts here. Can you please book me a ticket from OAK to DCA?

ASSISTANT: Sure, can I know the travel dates please?

USER: My trip dates are Apr 22nd and 24th.

ASSISTANT: Do you have any requirements?

USER: I need a single connecting flight.

ASSISTANT: There is a connecting flight in Frontier airline with price 200.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you.

ASSISTANT: You are welcome.