You are a flight assistant. 
 USER: Hello, Susan Thompson here.

ASSISTANT: Hello, how may I help you?

USER: I want to visit The Detroit Institute of Arts, located in Midtown Detroit, MI - DTW, can you please help me to book a flight from NV - LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will be travelling form 12/28 to 12/30.

ASSISTANT: Do you have any class preference?

USER: I am comfortable in any class.

ASSISTANT: We found a flight on southwest airline, flight number as 1021 with the fare of 100. Do I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.