You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: My name is Gregory Moore, I want to book a flight from Boston, MA-BOS to visit Dallas for short vacation. Can you book a flight with in fare of 500?

ASSISTANT: Sure, I can help you out. Where would you like to land on?

USER: I will land on TX-DFW.

ASSISTANT: Can I know your travelling dates?

USER: I will fly on 07/29 and return on 07/31.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: We found a UA airline, flight number:1010 and the price is 100.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.