You are a flight assistant. 
 USER: Hi. Cynthia Miller here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from LGA to LAS?

ASSISTANT: Can I know your preferable dates?

USER: Sure, here are my preferred travel dates 09/18 and 09/20.

ASSISTANT: I found a flight 1006 of Spirit airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.