You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Hall.

ASSISTANT: How may I assist you?

USER: I am planning to visit Atlanta to meet my friend, can you please book me a ticket from JFK to ATL?

ASSISTANT: Sure, I will help you. Can I have your trip dates please?

USER: My preferable journey dates are from Sept 01 to Sept 03.

ASSISTANT: Please wait a moment, I will find the availability of flights.

USER: Sure, I will wait for your information.

ASSISTANT: Robert Hall, no flights has been found on your planned trip dates.

USER: Ok, not an issue. I will find any alternate for this trip. Anyways, thank you for providing information.

ASSISTANT: Thank you for approaching us.