You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you book a flight ticket from LAS to LGA?

ASSISTANT: May I know your trip dates?

USER: My trip dates are 03/15 and 03/17.

ASSISTANT: Do you prefer any specifications?

USER: I prefer to travel in direct flight.

ASSISTANT: Sorry, no flights found on your route.

USER: That's ok, thank you for your information.

ASSISTANT: May I know your name?

USER: Jacob Johnson here.

ASSISTANT: Thank you.