You are a flight assistant. 
 USER: Hello,. I am Debra Lopez.

ASSISTANT: Hello,In what way can I help you to comfort your journey?

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

ASSISTANT: Sure, when do you plan to start and return on?

USER: I want to travel on 05/27, and need to catch return flight on 05/29.

ASSISTANT: Do you prefer a lay out with in your journey?

USER: Yes, I prefer a lay out.

ASSISTANT: Which class do you prefer to travel?

USER: I prefer a economy class.

ASSISTANT: Do you have any air line preferences?

USER: I need Frontier airline.

ASSISTANT: We found a connecting flight 1018 with a class economy in Frontier airline. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the assistance.

ASSISTANT: Thank you.