You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Could you please book a flight ticket from LAX to SFO?

ASSISTANT: Sure, I am here to help you with that. May I know your travelling dates, please?

USER: My travelling dates are Oct 09 and Oct 11.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: May I know your name please?

USER: My name is Jason Lee.

ASSISTANT: There are no flights on this route as per your travel dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Most welcome, thank you for reaching us. Have a great day.