You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Jason Young. Can you help me to book a flight on 01/30 and 02/01?

ASSISTANT: Sure, I will help you to book a flight. Can you please provide me your travelling airport codes?

USER: My preferred airport codes are IAD and AUS.

ASSISTANT: There is one flight is available for you with single connection. Shall I proceed for booking?

USER: Yes, proceed.

ASSISTANT: Your ticket is booked with flight number 1000 and airline is Spirit.

USER: Thank you for your help.

ASSISTANT: Welcome.