You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to book a ticket from ATL to LAX, can you please help me out?

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

USER: I am travelling on these dates Oct 18th and 20th.

ASSISTANT: Would you like to board a direct or connecting flight?

USER: I need single connected flight.

ASSISTANT: Do you have any class preference?

USER: I don't have any other preferences.

ASSISTANT: Is there any other requirements?

USER: I need single connected flight.

ASSISTANT: May I know your name please?

USER: Matthew Walker here.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a great day.