You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Ronald Walker. Can you book a flight ticket from LAX to LAS?

ASSISTANT: When are you planning to depart and return on?

USER: My preferred travel dates are Aug, 29 and Aug, 31.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other specification with the timing?

USER: My depart should be at morning.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

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

ASSISTANT: Thank you for contacting us.