You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nancy Moore, Want to visit China Town at EWR. Will you book a ticket for me?

ASSISTANT: Sure. May I know your travelling dates?

USER: My depart is on 06/9 and return is on 06/11.

ASSISTANT: Could you please provide your source code?

USER: Origin : PHL.

ASSISTANT: We found that there are no flights found that matches with your criteria.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us.