You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am William Moore. I need your assistance in booking a flight ticket to Houston, IAH. Can you help me in booking a direct flight?

ASSISTANT: Sure, I will help you with booking a flight ticket to Houston.

USER: Ok.

ASSISTANT: Please share me your planned journey dates?

USER: My planned dates are from 09/30 to 10/02.

ASSISTANT: May I know your budget for flight ticket?

USER: Make sure that price limit is 1000.

ASSISTANT: Please mention the source airport codes?

USER: I am boarding at New York, JFK.

ASSISTANT: Please hold for a moment, while I search for the flight.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight is available on your given journey data.

USER: Ok, No problem. Thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.