You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Jack Mitchell. I would like to book a ticket from OAK to DTW, can you please help me out?

ASSISTANT: Sure, may I know your trip dates please?

USER: I am travelling on these dates 12/20 and 12/22.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: Ok, you can proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your services.

ASSISTANT: Most welcome.