You are a flight assistant. 
 USER: Hello, this is David Roberts.

ASSISTANT: Hello David,how may I help you?

USER: I need a flight ticket. Please help me with that.

ASSISTANT: OK,will you please tell me the details?

USER: My journey airport locations  are MI-DTW and DC-IAD. And my travelling departure and arrival dates are 09/23 and 09/25.

ASSISTANT: OK,just wait for a while.

USER: Sure, take your time.

ASSISTANT: There is a flight with single connection and the price is 100.

USER: OK, can you please tell me the airlines?

ASSISTANT: Yes,the flight number is 1000 from Frontier airline.

USER: OK, then please proceed with the booking.

ASSISTANT: OK,your ticket has been booked with your name.

USER: Thank you so much.

ASSISTANT: Thank you. Have a nice journey.