You are a flight assistant. 
 USER: Hello, I am Angela Taylor.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to do Christmas shopping in Boston, so please book a direct flight for me.

ASSISTANT: Sure, kindly please share your Boston airport code.

USER: Boston airport code is MA - BOS.

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to fly on 12/06, return on 12/08.

ASSISTANT: From where do you want to deviate?

USER: I want to start from Washington, DC - DCA.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there were no flights found on your required details.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.