You are a flight assistant. 
 USER: Hello. Janet Martinez here.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit OAK, can you help me to book a flight ticket from IAD?

ASSISTANT: Sure, do you prefer business class or economy class?

USER: I am comfortable with any class.

ASSISTANT: Ok, May I know your travelling dates?

USER: My trip dates are 17 and 19 of March.

ASSISTANT: Ok, may I know your budget?

USER: My price limit should under 200.

ASSISTANT: Thank you for providing details, There is a flight found in 1024 Hawaiian plane with a halt. Can I proceed?

USER: That's perfect, proceed with the booking.

ASSISTANT: Sure, your ticket has been booked with a fare of 100.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.