You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Justin Lee. Can you help booking a flight ticket from LGA to ATL?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I will start on 01/03 and return on 01/05.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am comfortable with any flight.

ASSISTANT: Do you have any other specifications?

USER: I need to depart in the morning time.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.