You are a flight assistant. 
 USER: Hello, I am Emma Lee.

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

USER: Can you please help me with booking a flight ticket from DTW to LAX?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates?

USER: My travelling dates are from Dec 07 to Dec 09.

ASSISTANT: Do you have any specifications?

USER: I prefer economy class with connecting flight.

ASSISTANT: Sorry, no flight found in that route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.