You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to spend this weekend with my family at Santa Monica Bay in Los Angeles, LAX.

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

USER: My travelling dates are Apr 19 and 21.

ASSISTANT: Please provide your source airport code.

USER: I want to start from Oakland, OAK.

ASSISTANT: Please provide your name.

USER: Richard Rodriguez.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight in business class.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: The Hawaiian airline is providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: I need a business class flight.

ASSISTANT: There are no flights found under your preferable details.

USER: Ok, thank you.

ASSISTANT: Welcome, have a great day.