You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to attend a Marriage in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are July 23 and July 25.

ASSISTANT: Can you help me with airport codes?

USER: My airport codes are MCO and IAD.

ASSISTANT: May, I know your good name?

USER: My name is Raymond Davis.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.