You are a flight assistant. 
 USER: Hello. Margaret Collins here.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Can you please book me a flight ticket from MCO to ORD?

ASSISTANT: Sure, may I know on which dates you preferred to travel?

USER: Sure, my planned trip dates are Dec 5th and Dec 7th.

ASSISTANT: Can you please mention your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any more specifications do you need?

USER: My return time should be in the evening.

ASSISTANT: Ok, please wait for a while.

USER: Ok, sure.

ASSISTANT: We found a United airlines, flight number 1019, and the fare of 200. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you for the service.

ASSISTANT: Thank you for choosing us.