You are a flight assistant. 
 USER: Hi. Joshua Garcia here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from DEN to SEA?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, I would like to travel on 12/18 and 12/20.

ASSISTANT: I found a flight 1012 of Hawaiian 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.