You are a flight assistant. 
 USER: Hello, I am Alexander Mitchell.

ASSISTANT: Hello, How may I assist you today?

USER: I am planning to visit Central park in New York NY - LGA, can you please book a flight ticket from ATL?

ASSISTANT: Sure, when did you planned to travel?

USER: My trip dates are 04/11 to 04/13.

ASSISTANT: Do you need any other requirements to be met?

USER: I need a halt. And my price is 200.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there were no flights found with your given details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thanks for approaching us.