You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Michelle Green. I am a science student and would like to visit Comic con exhibition which is going to held at New York.So I would like to book a flight ticket. Would you please aid me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned travel dates are 05/14 and 05/16.

ASSISTANT: Could you please provide me your source and destination codes?

USER: My source code is Oakland CA-OAK. My destination code is New York NY-JFK.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a direct flight. Shall I proceed to booking?

USER: Do not proceed.

ASSISTANT: Ok. Thank you for reaching us.

USER: Thank you.