You are a flight assistant. 
 USER: Hello, I am Margaret Miller.

ASSISTANT: Hello, how can I aid you?

USER: I want to attend a bio science event in TX - HOU from NY - JFK. Can you book a direct flight?

ASSISTANT: Sure, could you please share your travelling dates?

USER: My dates are 07/16 to 07/18.

ASSISTANT: Please provide price limit?

USER: The price should not exceed 1000.

ASSISTANT: Please give a couple of minutes. Let me check the availability.

USER: OK.

ASSISTANT: Thanks for your waiting. There are no flights found with your given details.

USER: Thanks for the information.

ASSISTANT: Thank you for contacting us.