You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Johnson.

ASSISTANT: How can I help you?

USER: Could you please help me with booking a flight ticket from CLT to DFW?

ASSISTANT: May I know your dates please?

USER: I would like to take off on 08/22 and return on 08/24.

ASSISTANT: I am sorry no flights found on your details.

USER: That's ok, I will find an another alternate way to complete my trip.

ASSISTANT: Thanks for choosing us.

USER: Thank you for the information.