You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: Can you please help me to book a flight from ATL to JFK?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Sure, I want to travel on Apr 27 and need to return on Apr 29.

ASSISTANT: Ok, please let me know your preferable timings.

USER: I do not have any preferences with timings.

ASSISTANT: Do you have any more specifications?

USER: I am looking for a flight with single connection.

ASSISTANT: Can  I have your good name please?

USER: Carol Jones here.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing us, have  a good day.