You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael Jones.

ASSISTANT: How may I assist you?

USER: I want to exhibit my arts in national gallery of art which is located in Washington DCA. Can you help me to book a flight from Dallas & Fort Worth, DFW?

ASSISTANT: Sure, may I know your planned journey dates please?

USER:  My journey dates are June 29 and July 01.

ASSISTANT: Do you need a connecting flight?

USER: I am ok with any flight.

ASSISTANT: May I know your departure and return timings?

USER: I want to return in the afternoon time.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Michael Jones, no flights has been found on your planned travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.