You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Gregory Lewis.

ASSISTANT: How can I oblige you today?

USER: I need to book a direct flight because there is a emergency at my home from DCA to AUS. Could you please help me in doing that?

ASSISTANT: Sure, we are perky to aid you. When are you willing to travel?

USER: My travelling dates are 02/10 and return on 02/12.

ASSISTANT: What is the budget for your ticket?

USER: I can pay up to 200.

ASSISTANT: Please, wait for a while I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time. There is no direct flight found to your route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.