You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight to attend a meeting with client. Can you book a direct flight for me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I will fly on Feb 15 and return on Feb 17.

ASSISTANT: Can you please share your airport codes?

USER: My source point is CLT and my destination is PHX.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, I want my depart flight in afternoon and return flight in afternoon.

ASSISTANT: May I know your name please?

USER: My name is Carolyn Jones.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.