You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Brian Smith here. I want to book a flight ticket from LAX to DTW. Can you help me in that?

ASSISTANT: Sure, please provide your travel dates.

USER: My trip dates are Jan 03 to Jan 05.

ASSISTANT: Do you have any preferences?

USER: My return should be in the evening.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.