You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of help are you expecting from our side?

USER: I would like to book my ticket from LAS to ORD. Can you please help me with booking a flight ticket?

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

USER: My planned travel dates are from Oct 18 to Oct 20.

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

USER: Yes, I prefer a lay by in between my journey.

ASSISTANT: May I know your good name please?

USER: Sure, Charles Johnson here.

ASSISTANT: Is there any other specifications regarding your journey?

USER: My depart time should be in the afternoon.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: That's ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for the information.