You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: Gregory Hill here. Can you book me a ticket from OAK to DTW?

ASSISTANT: Ok, can I know your preferable dates?

USER: Ok, here are my travel dates 01/06 and 01/08.

ASSISTANT: I found a flight 1003 of Spirit airlines matches with your preferences, can I proceed?

USER: Please book the ticket now.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.