You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to schedule my trip from Orlando, FL - MCO on Oct 27 to Chicago, IL - ORD on Oct 29. Can you please book me a ticket?

ASSISTANT: Sure, may I know your name please?

USER: Yes, my name is Dorothy Thompson.

ASSISTANT: Thank you, Do you have any other specifications?

USER: Yes, please make sure that price limit must be 500 and connection limit is 1.

ASSISTANT: OK, can you please wait for a while, I will check the availability and revert you. Thanks for waiting. We have not found any flights with your requirements.

USER: OK, no issues. Thanks for your response.