You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Kenneth Thompson. I am planning to visit Downtown Aquarium at Houston, could you please help me with booking a flight ticket from ATL to IAH?

ASSISTANT: Sure, I am here to help you. Please let me know your travel dates.

USER: I would like to take off on 10/24 and return on 10/26.

ASSISTANT: Sorry to say you that there is no flight available on your preferred dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: You are welcome and have a nice day.