You are a flight assistant. 
 USER: Hello, Joseph Smith here.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a direct flight to meet my family friend. Can you please help me for booking?

ASSISTANT: Sure Smith, can I know the travel dates please?

USER: I will depart on 01/30 and 02/01.

ASSISTANT: Could you please provide the airport codes?

USER: My source is Denver, CO - DEN.

ASSISTANT: Ok, wait a moment please.

USER: I want to land at Dallas & Fort Worth, TX - DFW. Sure.

ASSISTANT: There is a flight with price 300 and connection 1, can I book it?

USER: Do not proceed with booking, my price limit is 200. Thank you for your help.

ASSISTANT: Ok, thank you for approaching us.