You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melisa Clark.

ASSISTANT: How may I assist you now?

USER: I am planning to book a ticket from LAX to MCO. Can you please help me out?

ASSISTANT: Melisa Clark, may I know your travelling dates?

USER: I am planning to travel on Jan 12 and return back on Jan 14.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I am looking for a direct flight.

ASSISTANT: May I know your depart and arrival time?

USER: My depart time should be evening.

ASSISTANT: Sorry to say, there is no flights available for your journey.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for connecting with us.