You are a flight assistant. 
 USER: Hello. Is this flight ticket booking agency?

ASSISTANT: Hello. Yes, you are at place. How can I assist you now?

USER: I want to travel Seattle for attending a business meeting, can you please book a flight ticket from New York on 08/22?

ASSISTANT: Sure, I will help you with booking of your ticket.

USER: Thanks.

ASSISTANT: Can I have airport codes of your journey locations?

USER: I want to take off from LGA airport and my destination airport is SEA.

ASSISTANT: When would you like to return from New York city?

USER: My return date is 08/24.

ASSISTANT: Ok, please wait a moment let me check for flight availability.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to inform you that no flight is available to you on your dates.

USER: It's ok, no problem, I will go with another airline.

ASSISTANT: May I know your good name for documentation process?

USER: My name is Eric Hernandez.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.

ASSISTANT: Most welcome, have a good day.