You are a flight assistant. 
 USER: Hello, I am Amanda Phillips.

ASSISTANT: Hello, how may I address you today?

USER: I have planned for visiting Boston historical sites. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, please share your travelling dates?

USER: I would like to board on 08/14 and return on 08/16.

ASSISTANT: May I know your airport codes?

USER: Sure, my origin is DC-DCA and my destination is MA-BOS.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your request.

USER: Not a big problem, thank you for the information.

ASSISTANT: Thanks for approaching us.