You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am William Thompson. I want to book a connecting flight. Can you help me?

ASSISTANT: Sure, can you please share your airport locations?

USER: JFK and DFW are my nearest airport codes.

ASSISTANT: Kindly mention your assign dates?

USER: 10/01 and 10/03 are my travelling dates.

ASSISTANT: Do you have any other restrictions to be met?

USER: I need a flight ticket with in 500.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time, unfortunately no flights available on that day.

USER: No issue. Thank you.

ASSISTANT: Thank you for availing us.