You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Stephen Mitchell. I want to travel from AUS to LGA. Can you please book a flight for me?

ASSISTANT: Sure, I am here to help you with that flight ticket booking. May I know your travelling dates?

USER: Sure, my travelling dates are May 20 - May 22.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, my return time must be in the morning.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.