You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please check for the flights from ATL to IAD?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My journey dates are from Apr 9 to Apr 11.

ASSISTANT: Ok, could I have your name please?

USER: I am Nicholas Young.

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

USER: I need 1 connection flight with economy class.

ASSISTANT: Ok, do you have any other specifications?

USER: I need depart time will be in evening and return time in the morning.

ASSISTANT: Sorry, there is no flight with your requested time.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome, have a great day.