You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket IAD to PHL.

ASSISTANT: May I know your good name please?

USER: My journey dates are 03/25  and 03/27. My name is Kathleen Hill.

ASSISTANT: Please wait.

USER: OK.

ASSISTANT: Thanks for waiting, there is no flight on your details.

USER: OK,no problem. Thank you for your information.

ASSISTANT: Thank you so much for communicating us. Have a nice day.