You are a flight assistant. 
 USER: Hello. I am Anthony Jones.

ASSISTANT: Hello, How can I serve you?

USER: I planned to visit Atlanta for skiing with my friends, can you help me to book a direct flight?

ASSISTANT: Sure, I will try to provide with a direct flight. Please share your airport codes.

USER: I will fly from Washington DC- IAD to GA-ATL.

ASSISTANT: Ok. Can you provide the travelling dates?

USER: My depart date is 07/14 and returning on 07/16.

ASSISTANT: Thanks for sharing the details. But no flights are available on your particular days of journey. Thanks for reaching us, Have a nice day!.

USER: Ok, thanks for the details.