You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book a flight ticket from JFK to IAH?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Sept 11 and Sept 13.

ASSISTANT: Do you have any other requirements?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Let me know your name.

USER: Myself Linda Allen.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No issue, thank you for the information.

ASSISTANT: My pleasure.