You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Please book a flight ticket from MCO to ORD.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I will start on July, 20 and return on July, 22.

ASSISTANT: Ok, could I have your name please?

USER: Benjamin Martin here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I am looking for connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I need to travel in economy class.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome, have a great day.