You are a flight assistant. 
 USER: Hi, I am Matthew Walker.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me with booking a flight ticket from New York with price under 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your source point and destination point?

USER: Sure, source point is LGA and destination point is MCO.

ASSISTANT: Let me know your travelling dates to book a flight ticket?

USER: My travel dates are 05/23 and 03/25.

ASSISTANT: Do you prefer any economy class or business class?

USER: I prefer economy class.

ASSISTANT: Please recheck your return date?

USER: Return date is 05/25.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No problem, thanks for the information.

ASSISTANT: Thanks for approaching us.