You are a flight assistant. 
 USER: Hello, I am Carolyn Campbell.

ASSISTANT: Hello, how can I aid you?

USER: I want to visit White House with my friend, can you hlp me out with reservation.

ASSISTANT: Sure. Can you please provide travelling details?

USER: My origin is DCA and destination is IAD. My depart is 06/24 and return on 06/26.

ASSISTANT: Thanks for the information. Please wait for a moment.

USER: Sure. I need price under 200 with single connection of flight.

ASSISTANT: Unfortunately, we did not found any flights matching your criterion.

USER: No issues. Thank you, for the information.

ASSISTANT: Thanks for approaching us.