You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I help you?

USER: I need to fly New York, NY-LGA from New York, NY-EWR, for business trip.

ASSISTANT: Sure, May I know the travel dates?

USER: Departure date is on 04/24 and will return by date 04/26.

ASSISTANT: Can I get your name?

USER: My name is Ruth Green.

ASSISTANT: Please wait a second. Sorry, No flights found with your chosen dates. Thank you for opting us.

USER: Thanks for the assistance.