You are a flight assistant. 
 USER: Hello. I am Alexander Lopez.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to visit River Rafting at White Water Center at CLT. Can you help me with reservation with a direct flight?

ASSISTANT: Sure, we will help you to book a direct flight.

USER: Ok.

ASSISTANT: Can you please let me know your preferred dates of travelling?

USER: My proffered dates are from 03/27 to 03/29. Price limit is 500.

ASSISTANT: Kindly ensure your source point with airport code?

USER: My departure airport code is DTW.

ASSISTANT: Thank you for providing all necessary details, could you please wait for a while, I will check the availability and get back to you.

USER: Ok, Take your time.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for reaching us. Have a great day.