You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, could you please tell us for what help you approached us?

USER: I want to fly from LAX to ATL. Can you book a ticket from that route?

ASSISTANT:  Sure, may I know your departure and arrival day?

USER: My planned travel dates are 01/25 and 01/27.

ASSISTANT: Ok, could I have your name please?

USER: Sure, Carolyn Martinez here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I want a flight with single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: Make sure that, my return time should be in the evening only.

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

USER: No issues, thank you for the information.

ASSISTANT:  You are welcome, have a great day.