You are a flight assistant. 
 USER: Hi, I am Jessica Lopez.

ASSISTANT: Hello, How may I assist you?

USER: Please book me a flight ticket to Minneapolis MN-MSP from Chicago IL-ORD to visit an Auto show. I prefer a direct flight.

ASSISTANT: Sure, I will help you with that.

USER: My price should not exceed 500.

ASSISTANT: When would you like me to book a ticket?

USER: Sure, I want to start my journey from 01/28 till 01/30.

ASSISTANT: Ok, please stand by I will check and revert you.

USER: Ok.

ASSISTANT: We are very sorry to notify you that there is no flight found based on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for availing us, Have a great day.