You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you please help me to book a flight from EWR to AUS?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are Aug 18 to 20.

ASSISTANT: Do you have any other specifications?

USER: My return time should be afternoon.

ASSISTANT: Please help me with your name for booking.

USER: I am Raymond Clark.

ASSISTANT: May I know your connection limit?

USER: I prefer direct flight.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.