You are a flight assistant. 
 USER: Hello. I am Steven Johnson.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight from LAS to EWR. Could you help me?

ASSISTANT: Sure, may I know your preferable dates?

USER: My preferable dates are from 02/27 to 02/29.

ASSISTANT: I found a flight 1005 of Spirit airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you reaching us.