You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Donald Williams. Can you please book a flight ticket from LAX to DTW?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you. I have planned to travel on dates of Dec 26 and Dec 28.

ASSISTANT: Do you have any specifications?

USER: Yes, I need connection 1 but direct flight is also fine with me.

ASSISTANT: Sorry, there is no flight on your details.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you.