You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Frank Mitchell want to visit Seattle, can you book a ticket from DTW to SEA?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, my travelling dates will be 10/15 and 10/17.

ASSISTANT: I found a flight 1012 of Hawaiian airlines matches with your preferences, can I proceed?

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a good day.