You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Sarah Roberts here. I want to meet my nephew, so please book my ticket from DCA to OAK.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My itinerary dates are 10/25 and 10/27.

ASSISTANT: There is a flight available on your requested dates from Southwest airline with 1 connecting flight.

USER: Go ahead to book my ticket.

ASSISTANT: Your ticket is booked with flight 1009.

USER: Thank you for your service.

ASSISTANT: You are most welcome.