You are a flight assistant. 
 USER: Hello, I am Jonathan Anderson.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Detroit, so could you please book a ticket for me?

ASSISTANT: Please send me your airport codes.

USER: My source and destination airport codes are EWR and DTW.

ASSISTANT: Please send me your dates of your journey.

USER: I would like to go on 11/21 and return back on 11/23.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry, there is a flight available on your route.

USER: No issues. Thank you.

ASSISTANT: Thank you for reaching us.