You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I be your helping hand today?

USER: As I am planning to attend film festival in Dallas, DFW. I need a flight ticket on 08/10 from JFk , You can book my flight ticket with the name Paul Clark. I need a connecting flight.

ASSISTANT: Sure, May I know your return date please?

USER: My return date is 08/12.

ASSISTANT: Thanks for your information, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to notify you that no flights were available based on your schedule.

USER: Ok, no problem. Thank you for helping me.

ASSISTANT: Thanks for choosing our service, we hope to serve you again.