You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I need to book a flight ticket from OAK to DCA, Can you please help me for booking?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I would like to travel on 05/18 to return on 05/20.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No, I am comfortable with any class.

ASSISTANT: Please mention your name.

USER: Rebecca Thomas here.

ASSISTANT: The Spirit airlines providing an economy class flight with price 300 and the connections 1. Shall I confirm your ticket?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1001.

USER: Thanks for your information.

ASSISTANT: Welcome, have a great day.