You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance to you?

USER: I need to purchase plane ticket from ATL to JFK. Can you help me?

ASSISTANT: Sure, we are glad to assist you in booking a flight ticket. May I know your name please?

USER: I am Shirley Taylor.

ASSISTANT: Kindly mention your stopover in between journey?

USER: I need 1 lay by within my route.

ASSISTANT: Let me know your travelling dates.

USER: I will start on Dec 22nd and return on Dec 24th.

ASSISTANT: At which time you would like to depart and return?

USER: My return time must be in the afternoon.

ASSISTANT: We are sorry to inform you that there is no flight available with your given information.

USER: Ok fine, thanks for checking.

ASSISTANT: Thank you for availing us.