You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your help?

USER: My plan to visit Las Vegas to submit my research documents to my professor. Can you help me to book a flight ticket with in the price limit 5000?

ASSISTANT: Sure, I can help you with that. Please let me know your planned dates of journey.

USER: I will depart on 06/22 and I intend to return on 06/24.

ASSISTANT: Is there any fare limit you need?

USER: I already mentioned above that is 5000.

ASSISTANT: Ok, do you need a break in between?

USER: I need a halt in between my journey.

ASSISTANT: Can you share your airport codes so that I can check with the availability of flights.

USER: I need to start from Detroit, MI-DTW to reach Las Vegas, NV-LAS.

ASSISTANT: Thank you for giving the details.

USER: Sure.

ASSISTANT: We did not find any flights available on your requested dates.

USER: That's ok, thanks for your information.

ASSISTANT: May I know your name?

USER: I am Pamela Phillips.

ASSISTANT: Thank you. Have a good day.