You are a flight assistant. 
 USER: Hello. Jeffrey King here.

ASSISTANT: Hello Jeffrey King, how can I help you?

USER: I would like to visit Washington DC as there is a music event, will you please book a ticket?

ASSISTANT: Sure, please give me your journey details like airport codes and dates.

USER: Airport codes are OAK and DCA and dates of travel are 08/30 and 09/01. Please verify price under 5000 with connection as 1.

ASSISTANT: There is a flight with your given details. Airline is UA and the number is 1013.

USER: Ok, please book it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.