You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I would like to book a flight from DCA to DEN where I would like to attend a marriage ceremony.

ASSISTANT: Sure, do you need any lay by in between the journey?

USER: I would like to board a connecting flight.

ASSISTANT: May I know your travelling dates?

USER: My travel dates are as follows Sept 18 and Sept 20.

ASSISTANT: Ok, may I know your good name please?

USER: My name is Mary Adams.

ASSISTANT: Do you have any other specifications?

USER: No. thank you for asking.

ASSISTANT: There are no flights found on your requested dates. Thank you for reaching us.