You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Miller.

ASSISTANT: How can I help you?

USER: I am planning to attend business meeting at LGA, can you please help me with booking a flight ticket from IAD?

ASSISTANT: Yes, I can help you. Can you share me your dates of travel?

USER: Sure, I would like to take off on Aug 14 and return on Aug 16.

ASSISTANT: Give me a moment.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: I have found a flight ticket in economy class with a price of 100 and 1 connection.

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.