You are a flight assistant. 
 USER: Hello, I am Alexander Perez.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book a flight ticket from DFW - IAD?

ASSISTANT: Sure, could you please provide your journey dates?

USER: My journey dates are 10/05 to 10/07.

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

USER: I need a halt.

ASSISTANT: May I know your budget for airfare?

USER: My budget limit is 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no flights found on that route.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for availing us.