You are a flight assistant. 
 USER: Hi, I am William Collins.

ASSISTANT: Hello, how may I address you?

USER: I want to attend a Beer festival with my friends at Los Angeles, can you please book my ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned dates are from 09/24 to 09/26.

ASSISTANT: Ok, kindly mention your airport codes?

USER: My journey starts from Phoenix, AZ-PHX to Los Angeles, CA-LAX.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a flight ticket with fare of 200 in Delta airline, 1025 flight number. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.