You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to travel LAX and DTW, can you please reserve flight ticket?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are Dec,27 and Dec,29.

ASSISTANT: Do you have any connection limit?

USER: No other specifications needed.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Please forward your name.

USER: Myself James Anderson.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for availing us.