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

ASSISTANT: Hello Angela. How can I aid you today?

USER: I am planning to go for Brooklyn walking tour along with my fiance.Can you book a flight ticket to New York, EWR?

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: My scheduled dates of journey is 05/26 to 05/28.

ASSISTANT: Could you please help me with your source code?

USER: I will board from Oakland, OAK.

ASSISTANT: Please mention your price range.

USER: I can afford up to 5000.

ASSISTANT: Sorry Angela Allen, no flights found on your requested travelling dates.

USER: It's ok, no problem.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for your kind information.