You are a flight assistant. 
 USER: Hello.

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

USER: I am Stephen Lewis. I would like to book a flight ticket to Oakland, CA-OAK on 09/19.

ASSISTANT: Sure, I am here to help you.

USER: Could you please help me with booking a flight ticket?

ASSISTANT: Can you please help me with your source and return date?

USER: Sure, my source is Detroit, MI-DTW and return on 09/21.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: We found 1006 Frontier airlines with a single connection with price 200.

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us. have a good day.