You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can serve you today?

USER: My name is Karen Martin. I would like to book a ticket to Las Vegas, as I was invited by a hotel casino owner.

ASSISTANT: Sure, can you please let me know your journey dates?

USER: My travel dates are July 09 and July 11.

ASSISTANT: Kindly assign your source airport code?

USER: My genesis and terminus airport codes are DTW and LAS.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I wish not, thank you.

ASSISTANT: We found a Delta airlines, flight number 1016 matching your criteria, and the fare of 200. Shall I proceed?

USER: Sure, please proceed with the reservation.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for availing us.