You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to visit Detroit, please book a ticket from LAX to DTW.

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are 06/18 and 06/20.

ASSISTANT: May I know your name to proceed further?

USER: My name is Carolyn Miller.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Carolyn, I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.