You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service?

USER: Can you help me in booking a flight ticket from Sept 13 to Sept 15 by the name Sandra Evans?

ASSISTANT: Sure, I am here to help. May I know your origin and destination airport codes?

USER: My airport codes are from LAS to LAX.

ASSISTANT: Do you prefer a halt between your journey?

USER: Yes, I need a halt in my journey.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We have a flight from UA airlines, number 1014 and the fare is 100. Shall I proceed with it?

USER: Ok, You can proceed.

ASSISTANT: Your seat is reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for your opting us.