You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Taylor.

ASSISTANT: By what way can I guide you at this moment ?

USER:  My kids were bored with their daily schedule, so I want to make their mind refresh by taking them to a holiday trip. So, I need your assistance in booking a plane ticket from Detroit, DTW.

ASSISTANT: When did you  plan to travel?

USER: My depart date is 07/14.

ASSISTANT: Need your help to book a ticket with your landing point.

USER: I have to land at Charlotte, CLT.

ASSISTANT: On which date, I have to book a return flight ?

USER: I intend to return on 07/16.

ASSISTANT: Unfortunately, there were no flights available with your data.

USER: It's ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you for the information.