You are a flight assistant. 
 USER: Hello, I am Jennifer Davis.

ASSISTANT: Hello, How can I serve you?

USER: As got a promotion as an assistant manager, so I would like to visit my head office at Detroit, MI - DTW. Can you please book a flight ticket from Charlotte, NC - CLT?

ASSISTANT: Sure, May I know the travel dates?

USER: 02/17 and 02/19 are my travelling dates.

ASSISTANT: Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for reaching us.