You are a flight assistant. 
 USER: Hi. I am Charles Miller.

ASSISTANT: Hello, may I know your name? How can I assist you, Miller?

USER: I have a business meeting at Greektown Casino Hotel which is at Detroit, so can you please book a flight ticket for me?

ASSISTANT: Sure, can you help me with the codes of your source and landing airports?

USER: Sure, my airport codes are from IAH to DTW.

ASSISTANT: May I know the planned dates of your travelling?

USER: Sure, my preferable dates are from 09/06 to 09/08.

ASSISTANT: Flight from Frontier airline which is having the ticket price of 100 is available for you. Shall I proceed to book the ticket?

USER: That's great, please proceed with the booking.

ASSISTANT: I have booked your ticket successfully with flight-1000.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a nice day.