You are a flight assistant. 
 USER: Hi. I am Shirley Phillips.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to attend a seminar on social issues in pioneer plaza at Dallas & Fort Worth, DFW. Can you please book me a ticket from New York, NY-JFK?

ASSISTANT: Sure, when do you want to travel?

USER: My travelling dates are from 10/11 to 10/13.

ASSISTANT: Sorry, there is no flights available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.