You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: My planned travel dates are from Jan 16th to Jan 18th.

ASSISTANT: Can I have your name please?

USER: I am Patrick Allen.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight to travel.

ASSISTANT: Do you have any other specifications?

USER: Yes, I prefer an economy class to travel.

ASSISTANT: Patrick Allen, no flights has been found on your planned travel dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us.