You are a flight assistant. 
 USER: Hi, Andrew Lewis here.

ASSISTANT: Hello,. How may I help you?

USER: I want to book a flight ticket to New York to visit Statue of Liberty with my family on 08/19 and will return on 08/21. Can you help me with it?

ASSISTANT: Sure. May I know your airport codes?

USER: My source is MCO and destination is LGA.

ASSISTANT: I regret, no flights found with your requirement.

USER: It's Ok, thank you.

ASSISTANT: Thanks.