You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am John Johnson.

ASSISTANT: Yes, John.

USER: I need to visit CNN center in Atlanta to train subordinates. Can you please book a flight ticket from SFO to ATL?

ASSISTANT: That's sounds great. Sure, may I know your journey dates please?

USER: Sure, I would like to departure on 04/16 and return on 04/18.

ASSISTANT: Ok, please allow me to check the available tickets for you.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, John. There is a flight for you with Spirit airline and flight number is 1004.

USER: That's great to hear.

ASSISTANT: Would you like me to proceed?

USER: Yes, please confirm it.

ASSISTANT: Your ticket has been successfully confirmed.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for contacting us.

USER: Most welcome.