You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Kathleen Roberts here.

ASSISTANT: Nice to meet you Roberts.

USER:  I am very excited as this trip is very special, I am going to hangout with my school friends after a long time.Can you please book a ticket from OAK to DCA?

ASSISTANT: Sure, can you help me providing your trip dates please?

USER: My trip dates are 09/14 and 09/16.

ASSISTANT: I found a flight for you with Delta airline and it costs you 200. Shall I proceed?

USER: I want a flight with 1 connection.

ASSISTANT: Delta airline is with single connection. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.