You are a flight assistant. 
 USER: Hello, I am Michelle Harris.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to visit Roosevelt Island Aerial Tram with my family members at New York, NY-EWR. So please help me in booking a flight ticket from New York?

ASSISTANT: Sure, May I know the source code?

USER: Sure, my source code is LGA.

ASSISTANT: Please help me with your travel dates.

USER: 05/22 is my return date and 05/20 is my departure date.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: Ok, not a problem. Thanks for your service.

ASSISTANT: Thank you for opting us.