You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: I am Debra Baker, want to participate in music competition at Detroit, DTW.

ASSISTANT: Ok.

USER: Can you please help me in booking a flight ticket on 04/27?

ASSISTANT: Sure, we are glad to help you.

USER: My return will be on 04/29.

ASSISTANT: Help me with your source airport location.

USER: Denver, DEN is my boarding point.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. We are currently not running any flights to your route.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for opting us.