You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER:  I am planning to celebrate my friend's birthday at Washington, IAD. Can you please make a reservation from AUS?

ASSISTANT: When you are willing to travel?

USER: I want to start my journey on June 24 and return back on June 26.

ASSISTANT: Do you have any connection limit? May, I know your good name?

USER: Sure, myself Anna Carter.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.