You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, May I know your good name please?

USER: sure, I am John Thompson.

ASSISTANT: Hello, John Thompson, How can I assist you?

USER: I want to enjoy beach holidays at Detroit, please book a flight ticket within price 500.

ASSISTANT: Sure, When did you plan to travel on?

USER: My travelling date is from 03/19 to 03/21.

ASSISTANT: Ok, what do you prefer either connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: From where do you want to start your journey?

USER: I want to fly from New York, NY- LGA.

ASSISTANT: Ok, Help me with your destination airport?

USER: My Dest airport is Detroit, MI- DTW.

ASSISTANT: Ok, wait for a minute, I will revert you with the availability.

USER: Ok.

ASSISTANT: Thanks for your patience. We apologise that, we did not find any flights that matches your preferred dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.