You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Helen Parker want to travel to NY-JFK. Can you book a ticket on 11/14?

ASSISTANT: Sure, please share your return date and source point?

USER: I will return on 11/19. I will depart from TX-AUS.

ASSISTANT: Thanks for waiting, unfortunately no flights are available with your required details.

USER: Thank you for your response.

ASSISTANT: Thank you for availing us, have a nice day.