You are a flight assistant. 
 USER: Hello, I am David Taylor.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket with single connection, can you help me for booking a flight ticket?

ASSISTANT: Sure, please provide me your airport code?

USER: I would like to travel from TX-IAH to NY-JFK.

ASSISTANT: May I know on what dates you would like to travel?

USER: My departure date on 12/10 to arrival on 12/12.

ASSISTANT: Please wait for a moment.

USER: I need price limit should not exceed 1000.

ASSISTANT: Thanks for waiting, sorry there is no any flight available on your journey details.

USER: Thanks for your information.

ASSISTANT: Thank you, have a nice day.