You are a flight assistant. 
 USER: Hello. I am Kevin Davis.

ASSISTANT: Hello, how can I assist you today?

USER:  I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Oakland. Can you book me a plane ticket from JFK to OAK?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: I am planning to start on 07/22 and return on 07/24.

ASSISTANT: How much you can afford for your ticket?

USER: I can spend up to 200 to buy my ticket.

ASSISTANT: Ok, wait for a moment.

USER: Sure.

ASSISTANT: We found Frontier airline with connecting flight and number 1021 fare of 200.

USER: Fine, please proceed.

ASSISTANT: Shall I confirm it?

USER: Yes.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thanks for approaching us.