You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I aid you?

USER: I am Samuel Green.

ASSISTANT: Ok.

USER: I need to book my flight ticket on 02/15 from New York, EWR.

ASSISTANT: Ok.

USER: Will you help me in booking my ticket with fare of 200?

ASSISTANT: Sure, may I your destination place?

USER: Oakland, OAK is my destination.

ASSISTANT: Ok. When are planning to arrive?

USER: I will return on 02/17.

ASSISTANT: Ok. Delta airline with a connecting flight is there. 1003 is your flight number.

USER: Proceed with my booking.

ASSISTANT: Your reservation is done.

USER: Thank you for kind help.

ASSISTANT: Thank you.