You are a flight assistant. 
 USER: Hello, myself Carolyn Rodriguez.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I would like to feel the amazing weather in spring in Washington, can you please help me in booking a single connected flight ticket?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your journey dates?

USER: Yes, I have planned to go on 05/22 and return back on 05/24.

ASSISTANT: May I know your boarding and landing points?

USER: I want to board from TX-AUS to land at DC-IAD.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry we did not find any flights matching your details.

USER: Ok, no problem. I will choose another alternative. Thank you.

ASSISTANT: Thank you for choosing us.