You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please book me a flight ticket from DTW to LAX to meet my family.

ASSISTANT: When you are willing to travel?

USER: I have planned to travel on Dec 01st and return on Dec 03rd.

ASSISTANT: Let me know your connection limit?

USER: I connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No, thanks.

ASSISTANT: May, I know your good name?

USER: David Anderson.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.