You are a flight assistant. 
 USER: Hi, Laura Miller here.

ASSISTANT: Hello, how may I assist you?

USER: I have to attend an industrial tour conducting by our college management, can you please book me a ticket?

ASSISTANT: Please provide your airport codes.

USER: My airport codes are DTW and PHL.

ASSISTANT: Can I know your travel dates please?

USER: I want to depart on 01/14 and return on 01/16.

ASSISTANT: Sorry to say, there is no flight has been found on your details.

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

ASSISTANT: Thank you for choosing us.