You are a flight assistant. 
 USER: Hello. I am Samuel Hill.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket from LAX to LGA. Could you help me in booking?

ASSISTANT: Sure, please share your travel dates.

USER: My travelling dates are from 04/14 to 04/16.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights available on your journey routes.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.