You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: Samuel Carter here.

ASSISTANT: Carter, how can I assist you?

USER: Can you book my ticket from DTW to PHX?

ASSISTANT: Sure.

USER: My travelling dates are from 04/28 to 04/30.

ASSISTANT: Let me check, please wait for a moment.

USER: Sure.

ASSISTANT: Flight number 1004 of delta airlines is available for you. Should I book your ticket?

USER: Please proceed with this.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for contacting us.