You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Angela Nelson here. I have to attend a business meeting in Detroit, can you please search a flight with 1 connection?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: These are my travelling dates 07/04 and 07/06.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are from ORD to DTW.

ASSISTANT: Ok, give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight available for your request.

USER: It's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.