You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Detroit to meet my grand parents, please help me in booking a ticket from LAS to DTW.

ASSISTANT: Sure, I will help you. Would you please provide me your travel dates?

USER: My planned journey dates are 08/21 and 08/23.

ASSISTANT: Please can I know your name?

USER: My name is Helen Carter.

ASSISTANT: There is a flight in UA airlines with 1 connections and price is 300. Can I proceed for booking?

USER: Please check the price below 200.

ASSISTANT: Sorry, there are no flights found on your budget. Have a nice day.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us.