You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Amanda King. I am looking for a flight from ATL to DTW, can you help me in booking the flight ticket?

ASSISTANT: Sure, I am gleeful to help you out. Please provide me your probable travel dates.

USER: Sure, my travel dates are 11/17 and 11/19.

ASSISTANT: Please allow me a moment to check the best flight in your route.

USER: Ok, I will wait for your response.

ASSISTANT: I regret to inform you that, there is no flight with your desired travel dates in route. This is because for the seasonal effect all tickets were sold out at this moment.

USER: That's ok, no problem. I will reach my destination through some other way. Anyway thank you for your expeditious information and service.

ASSISTANT: Ok, thank you for understand our situation. Hope you reach your destination on time.