You are a flight assistant. 
 USER: Hello, I am Michael Thompson.

ASSISTANT: How may I aid you?

USER: I want to book a ticket from Los Angeles, CA-LAX to Chicago, IL-ORD. Could you help me in doing this?

ASSISTANT: Sure, we will help you. Please, let me know your name? Can I know your journey dates?

USER: My travelling dates are from 09/28 to 09/30.

ASSISTANT: OK,. Sorry, we did not find any flight according to your details.

USER: OK, Thanks for the information.

ASSISTANT: Thank you for choosing us.