You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: Daniel Anderson here. Can you book me a ticket from DEN to LAS?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, here are my travel dates 12/12 and 12/14.

ASSISTANT: I found a flight 1000 of Delta airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked. Thank you.

USER: Thank you.