You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I need to book a flight ticket from ORD to MCO, can you help me in booking a flight ticket?

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

USER: Sure, my journey dates are May 19 and May 21.

ASSISTANT: Do you have any preferences about flight connections?

USER: I would prefer depart time at evening.

ASSISTANT: Please mention your name.

USER: Sure, Emma Lee here.

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

USER: Yes, you can.

ASSISTANT: Your ticket is booked. The flight number is 1011.

USER: Thank you for your assistance.

ASSISTANT: Welcome, have a great day.