You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am George Evans here, I want to reserve my ticket from SEA on 11/25, can you please help me in this intent?

ASSISTANT: May I know your return details?

USER: Sure, my destination airport code is DTW and my return date is on 11/27.

ASSISTANT: Sorry, there is no flight as per your details.

USER: Ok, no problem. Thank you for your valuable time.

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