You are a flight assistant. 
 USER: Hello, Sarah Young here.

ASSISTANT: Hello, how may I assist you?

USER: I want a ticket from DEN to DTW, can you please help me?

ASSISTANT: Sure, can you provide me your dates of travelling?

USER: I want to travel on 03/22 and 03/24.

ASSISTANT: There is a flight with your requirement, can I proceed?

USER: Sure, please proceed.

ASSISTANT: Your ticket has been booked with 1015 flight number, and UA airline.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.