You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Patrick Evans. I am looking to book a flight ticket to meet my friend in Detroit. Can you help me for booking a flight ticket from LAS to DTW?

ASSISTANT: Sure, May I know the journey dates?

USER: My travelling dates are Aug 11 and Aug 13.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: We have found a direct flight from UA airline. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with the flight number 1022.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.