You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to visit the Lincoln Park Zoo at Chicago, ORD so, can you book a ticket from New York, EWR?

ASSISTANT: Sure, May I know the travel dates?

USER: I want to travel on 08/29 and return back on 08/31.

ASSISTANT: May I know your name?

USER: My name is Sharon Gonzalez.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.