You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Raymond Harris. Can you help me booking a flight ticket from DEN to DTW?

ASSISTANT: May I know your travelling dates to get a flight for you?

USER: I will start on Jan, 16 and return on Jan, 18.

ASSISTANT: There is a connecting flight-1021 with price 100, is it ok for you?

USER: Please proceed with the booking.

ASSISTANT: Ok, booking is done on Spirit airlines.

USER: Thank you.

ASSISTANT: Welcome Raymond Harris, have a safe trip.