You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to travel from OAK to SEA, can you help me?

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

USER: My trip dates are Nov 19 to 21.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a connecting flight.

ASSISTANT: Please mention your name.

USER: Jacob Green.

ASSISTANT: The United airlines providing an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: Ok, proceed.

ASSISTANT: Your ticket is booked. The flight number is 1009.

USER: Thank you for choosing us.

ASSISTANT: Welcome, have a great day.

USER: Thank you.