You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please book a ticket from DTW to ATL.

ASSISTANT: May I know your trip dates?

USER: Travelling dates are Apr 24 and Apr 26.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Delta airlines with flight 1018 is providing service with a connecting flight.

USER: Please book a flight.

ASSISTANT: May I know your name?

USER: I am Elizabeth Johnson.

ASSISTANT: Elizabeth Johnson, your ticket is confirmed.

USER: Thanks.

ASSISTANT: Thank you for choosing us.