You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning. What can I do for you?

USER: My name is Anna Robinson. I want to travel from NV-LAS to CA-SFO for attending a seminar.Can you please help me for booking a ticket?

ASSISTANT: Yes sure. Let me know your travelling dates?

USER: My departure date is 08/20 and return date is 08/22. Make sure my price limit is 200 and the connections limit is 0.

ASSISTANT: Good news for you, I got a flight 1020 of AA airlines which matches all your requests. Can I proceed?

USER: Please proceed for booking.

ASSISTANT: Sure, your ticket has confirmed, have a nice journey.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.