You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Samantha Roberts.

ASSISTANT: Glad to meet you Samantha Roberts.

USER: I planned to meet my cousin in DEN, can you please help me to book a flight ticket from DTW?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I prefer to travel on Mar 29 and Mar 31.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure.

ASSISTANT: Sorry Samantha Roberts, there are no flights available on your requested dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.