You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please book a flight ticket on 12/01 and return on 12/03?

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

USER: My location codes are OAK - SFO.

ASSISTANT: Could you please help me with your price range?

USER: My airfare is 200.

ASSISTANT: There is a Delta 1005 airline with fare of 100 which matches your travelling dates.

USER: Please proceed.

ASSISTANT: May I know your name?

USER: I am Justin Lewis.

ASSISTANT: Your booking has been confirmed on name of Justin Lewis.

USER: Thanks for assisting me.

ASSISTANT: Thank you for approaching us.