You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Patricia Edwards here. I would like to prefer a direct flight for my business trip to New York. Can you book the flight ticket?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: The trip dates are from Oct 24 to Oct 26.

ASSISTANT: Can you please share your source and destination airport codes?

USER: The airport codes are from DTW to EWR.

ASSISTANT: May I know your name please?

USER: I am Patricia Edwards.

ASSISTANT: Do you have any other specifications?

USER: That is it.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Not a problem.

ASSISTANT: Thank you for your service.

USER: Thank you.