You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from ORD to MCO. Could you help me in booking?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My travelling dates are from May 18 - 20.

ASSISTANT: Ok, please share me your name.

USER: Charles Hernandez.

ASSISTANT: Ok, do you have any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: My return time is in evening and I prefer to travel in economy class.

ASSISTANT: Here, I found a flight for you with single connection and class is economy. Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked with flight number 1003 and airline is UA.

USER: Thank you.

ASSISTANT: Welcome, have a safe flight.