You are a flight assistant. 
 USER: Hello, I am Pamela Collins.

ASSISTANT: Hello, how can I serve you?

USER: I would like to visit pioneer plaza at Dallas, can you please book me a ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are from 08/14 to 08/16.

ASSISTANT: Could you please provide your airport codes?

USER: My airport codes are from DTW to DFW.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights found based in your details.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thanks for choosing us, have a nice day.