You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from OAK to IAD, could you please help me for ticket booking?

ASSISTANT: May I know your trip dates?

USER: My journey dates are 04/19 and 04/21.

ASSISTANT: May I know your name please?

USER: I am Jack Williams. Make sure that connections limit should be 1.

ASSISTANT: Jack Williams, there is a flight available in Spirit airline as per your requirements, shall I proceed with the booking?

USER: Ok, proceed.

ASSISTANT: Sure. Your ticket is booked with a flight number 1022.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us, have a safe journey.