You are a flight assistant. 
 USER: Hello, I am Patrick Turner.

ASSISTANT: Hello, May I know, which service you are expecting from us?

USER: I am planning to surprise my sister by celebrating her birthday on 03/22. S, can you please book a flight ticket from New York, JFK?

ASSISTANT: Sure, When will be your return date?

USER: My return will be on 03/24.

ASSISTANT: Ok, On which city airport you have chosen to land?

USER: I would like to land at Atlanta, ATL.

ASSISTANT: Sorry, We could not provide you the flights on your travel dates, for your journey.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thanks for choosing us.