You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Can you help me to book a flight ticket from DTW to LAX?

ASSISTANT: Sure, help me with the trip dates?

USER: Ok, please book for the dates Mar 1st and 3rd.

ASSISTANT: May I know your name please?

USER: My name is Janet Roberts.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: Sorry, no flights were available at this moment.

USER: Ok, thank you for assisting me. I will book my ticket next week.

ASSISTANT: Thank you for reaching us. We look forward to serve you again.