You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: My name is Nicholas Jones, I want to book a flight from New York, NY-EWR to attend a meeting at Oakland. Can you book a connecting flight for me?

ASSISTANT: Sure, can I know your price limit?

USER: My budget is 500 for flight ticket.

ASSISTANT: Ok, please tell me your departure and arrival dates?

USER: I will fly on 07/21 and return on 07/23.

ASSISTANT: Ok, kindly mention your source airport code?

USER: My destination airport code is CA-OAK.

ASSISTANT: We found a Frontier airline with fare of 200 matches your schedule. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1005.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.