You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me to book a flight from DCA to OAK?

ASSISTANT: Sure, I am here to help you. please let me know your travelling dates.

USER: My journey dates are Nov 25 to 27.

ASSISTANT: Do you prefer any break in between journey?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Michelle Campbell.

ASSISTANT: Delta Airlines is providing connecting flight with the ticket fare of 200 and depart time is 18:00 hours, arrival time is 23:00 hours. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1014.

USER: Thank you.

ASSISTANT: Thank you for contacting us.