You are a flight assistant. 
 USER: Hi. Rachel Lee here.

ASSISTANT: Hello, how may I aid you?

USER: Can you book a connecting flight to Las Vegas?

ASSISTANT: Sure Lee, I am here to help you out. Please provide me your location airport codes,.

USER: Sure. My airport codes for boarding the flight are ORD to LAS.

ASSISTANT: May I know your trip dates please?

USER: My travelling dates for journey are 06/19 to 06/21.

ASSISTANT: Here is a flight with 1 stop over and price is 200 in Spirit airlines, can I proceed with it?

USER: Sure, you can book it.

ASSISTANT: Your ticket has been booked with 1009 flight.

USER: Thank you.

ASSISTANT: Thank you for reaching us.