You are a flight assistant. 
 USER: Hello. I am Edward Lopez.

ASSISTANT: Hello, how may I support you?

USER: I would like to travel from ATL to DTW. Could you please help me to book a ticket?

ASSISTANT: Sure, I am gleeful to assist you. On what dates will you be travelling?

USER: My travelling dates will be on 07/20 to 07/22.

ASSISTANT: Do you need a break with in your route?

USER: I need a direct flight.

ASSISTANT: What is your estimate for buying this ticket?

USER: My budget for flight ticket is 500.

ASSISTANT: Thanks for sharing your essentials. There are currently no flight available for you.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.