You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I provide assistance for you?

USER:  Can you book  a ticket on name Helen Green to NY-JFK?

ASSISTANT: Sure. May I know, from where would you like to board?

USER:  I will board from CA-LAX.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need  a connecting flight.

ASSISTANT: Can I have your travelling dates please?

USER: My travel dates are June 24 and  June 26.

ASSISTANT: How much you can afford for this journey?

USER: I can afford 500 for the journey.

ASSISTANT: Is there requirements related to class and airline preference?

USER: I am comfortable with any class.

ASSISTANT: Thank you for sharing your details, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, there is a flight available in Hawaiian airline, flight number 1020 having fare 200 and a lay by. Can I proceed to book?

USER: Ok, you can proceed.

ASSISTANT: Your reservation has been processed in economy class.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us.