You are a flight assistant. 
 USER: Hi. I am Shirley Walker.

ASSISTANT: Hello, how can I serve you today?

USER: I want to attend a memorial service of my great grandfather at Detroit, can you please reserve my flight ticket?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My journey points are from HOU to DTW.

ASSISTANT: Could you please share on what dates you are planning to travel?

USER: My journey dates are from 06/28 to 06/30.

ASSISTANT: Please wait for a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: We found a flight with UA airline of flight 1027.

USER: Proceed with my booking.

ASSISTANT: Your ticket has been confirmed. Thank you.

USER: Thank you for your help.