You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Joseph Nelson. On the occasion of inauguration event at white house, I need your help to go there by booking a ticket on 09/08.

ASSISTANT: Could you please mention your return date?

USER: Return date is on 09/10.

ASSISTANT: May I know your source and destination codes?

USER: I have to reach the  Washington, DCA from Austin, AUS.

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

USER: Yes, I need a lay by in my journey.

ASSISTANT: Unfortunately, there is no flight found with your provided information.

USER: No worries at all. I will go with another option.

ASSISTANT: Thank you for reaching us.

USER: Thank you for helping me.