You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Patrick Thompson. I would like to book a ticket for business meet to San Francisco, can you please help me in booking?

ASSISTANT: Sure, may I know how much airfare are you looking for?

USER: I am looking for a fare with 500 and below.

ASSISTANT: On what dates will you be travelling?

USER: I would like to travel on 06/08 and 06/10.

ASSISTANT: Could you please provide me your airport codes?

USER: I would like to travel from my nearest airport codes IAD and SFO.

ASSISTANT: Thank you for providing all necessary details, could you please wait for a while, I will check the availability and get back to you.

USER: Thank you. Sure, I will wait for your response.

ASSISTANT: There is an Southwest airline with flight number 1024 available on the dates you required and the total tariff is 200. Is that fine?

USER: Ok, you can proceed with this flight.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your services.