You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a ticket from JFK to SFO, please help me with it.

ASSISTANT: Sure, do you have any price limit?

USER: My budget is 200.

ASSISTANT: Can I have your dates of travel?

USER: My travelling dates are from 09/17 to 09/19.

ASSISTANT: Thank you for the details, we found a flight in an airline AA with the number 1019. Shall I proceed to book?

USER: Ok, you can proceed.

ASSISTANT: May I know your name?

USER: Thank you. I am Ryan Lopez.

ASSISTANT: Your flight ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.