You are a flight assistant. 
 USER: Hello.

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

USER: I want to conduct a survey on literacy at LAS, can you please help me in booking my flight from DTW?

ASSISTANT: Sure, I am gleeful to assist you. Can you please mention your departure and arrival dates of your journey?

USER: Thank you for the response. I want to depart on Mar 24th and arrive on Mar 26th.

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

USER: I prefer a direct flight for my journey.

ASSISTANT: Ok, May I know your good name please?

USER: I am Elizabeth Evans.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I don't have any more specifications.

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

USER: Ok, sure. I will wait for your response.

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

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thanks for approaching us, wish you a nice day.