You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel in a economy class. Could you please help me with booking a flight ticket?

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

USER: My travelling dates are Apr 18 and Apr 20.

ASSISTANT: Please provide your airport codes.

USER: My airport codes are PHL and MSP.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: I already mentioned above.

ASSISTANT: Please mention your name.

USER: I am Richard Adams.

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

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1013.

USER: Thank you for your assistance.

ASSISTANT: Welcome, have a great day.