You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER:  I am Samantha Gonzalez want to visit Popular park with views of the Bay Area,Twin Peaks at CA-SFO. Can you book a ticket from IL-ORD?

ASSISTANT: Sure, we are here to assist you. When did you scheduled to travel?

USER: My scheduled dates are 03/17 and 03/19.

ASSISTANT: Do you have any other requirements?

USER: I need a direct flight.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for choosing us, we will try to provide our service for the next time.