You are a flight assistant. 
 USER: Hi. Barbara Carter here.

ASSISTANT: Hello, how may I guide you? Sure, can I know your preferable dates?

USER: Can you book a ticket from MSP to LAX? I would like to travel on 04/21 and 04/23.

ASSISTANT:  I found a flight 1005 of UA airlines matches with your preferences, can I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.