You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Larry Martinez. I want to book a flight ticket from OAK to ATL. Could you help me in booking?

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from Oct 14-16.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Ok, wait for a while.

USER: OK.

ASSISTANT: Sorry, we couldn't found any flights for you.

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

ASSISTANT: Thank you for reaching us.