You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in booking me a flight from LAX to reach DTW?

ASSISTANT: Sure, can you share your trip dates?

USER: Thank you for the response, my travelling dates are Nov 15th and Nov 17th.

ASSISTANT: May I know your name?

USER: I am Justin Thompson.

ASSISTANT: Do you have any preferences?

USER: I want to return in the evening.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.