You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you now?

USER: Can you please help me in booking a flight ticket from Dallas, DFW to New York, JFK?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My journey dates are from July 08 to July 10.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a flag stop in between journey.

ASSISTANT: May I know your good name please?

USER: My name is Ashley Williams.

ASSISTANT: Is there any other specifications regarding your journey?

USER: My return time is evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are sorry to say that, there is no flight found on your requested dates.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you.