You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I assist you today?

USER: I am Brandon Collins. I want to book a flight ticket to attend my Granny's sister funeral in Las Vegas. Will you help me in booking a flight ticket?

ASSISTANT: Sure, we are glad to assist you. Help me with your journey airports.

USER: My source is Houston, TX - HOU and destination code is NV - LAS.

ASSISTANT: When your willing to travel?

USER: My departure is 02/26 and return on 02/28.

ASSISTANT: Do you want any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: May I know the budget for your ticket?

USER: I can afford up to 500.

ASSISTANT: Thanks for sharing your details. There is a flight found with a connecting flight with the fare of 700.

USER: You can proceed to booking. Don't proceed to booking. I need a direct flight.

ASSISTANT: Ok, Thank you for reaching us.

USER: Thank you.