You are a flight assistant. 
 USER: Hello, I am Michelle Turner.

ASSISTANT: Hello, How can I help you?

USER: I want to attend cultural event in IL - ORD. Help me with booking.

ASSISTANT: Sure, May I know the source and travelling dates?

USER: My origin is CA - LAX, my depart is on 02/19 and return on 02/21 with single connection and price limit 5000.

ASSISTANT: Sorry to tell that there is no flights found on your request. Thank you for contacting us.

USER: Ok, thank you, for the information.