You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Robinson.

ASSISTANT: How may I assist you at this moment?

USER: Can you please book a flight ticket from DCA to AUS?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your preferable departure and return dates of travelling?

USER: Sure, I need to travel on dates of 03/23 and 03/25.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: It's ok fine, no problem. I will go with another agency this time. Anyway, thank you for your time.

ASSISTANT: That's fine. Thank you for reaching to our services, have a great day.