You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Myself Benjamin Smith from Las Vegas. I have to attend a business meeting in Washington next month. Can you please help me in flight ticket booking process?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for your positive response.

ASSISTANT: Can you please share your preferable journey dates?

USER: I want to take off on 12/27 and please confirm my return ticket also on 12/29.

ASSISTANT: May I know your airport codes ?

USER: I would like to fly from LAS airport and destination airport is IAD because these two airports are very convenient for me to travel.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I found a ticket for you with price of 300, flight number is 1007 and connection is 1. Is it ok for you?

USER: But my budget limit is 200. Can you please check once again as per your requested my budget limit?

ASSISTANT: I am sorry to say that there is no flight found with that price.

USER: Oh! It's ok no problem, I will contact another airline agency. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a great day.