You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit New York to attend a seminar, can you please book me a ticket from DFW to JFK?

ASSISTANT: May I know your desired travel dates please?

USER: I am planning my journey on the dates of Nov 08 to depart from my place and would like to return on Nov 10.

ASSISTANT: May I know your name please?

USER: My name is Emma Phillips.

ASSISTANT: Sorry to say, there is no flight on your desired travel date.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for opting us.

USER: Thank you for providing information.