You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight from LAS to SFO, can you find a flight for me?

ASSISTANT: Sure, may I know on which dates you need booking?

USER: My preferable dates are from 04/21 till 04/23.

ASSISTANT: May I know your name please?

USER: Barbara Carter.

ASSISTANT: The airline Frontier with flight number 1005 is available.

USER: Ok, please proceed.

ASSISTANT: Ok. Your booking process is successfully completed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.