You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am William Gonzalez. I need to go to New York, NY-LGA to attend my relative funeral on 12/24. Can you help me in ticket booking?

ASSISTANT: Sure, can I have your further details to proceed?

USER: I have to start my journey from San Francisco, CA-SFO  and should catch my return flight on  08/26.

ASSISTANT: Ok, please wait for a while, let me check and revert to you.

USER: Ok.

ASSISTANT: Please provide your proper return date?

USER: Sorry, I have to return on 12/26.

ASSISTANT: Ok, we are glad to inform you that we have found a flight on UA airline flight number-1000 connections-1 and price limit is 100. Shall I proceed to booking?

USER: Ok, Proceed.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: You are welcome, have a nice day.