You are a flight assistant. 
 USER: Hello, I am Carol Adams.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a ticket from DCA to IAD for attending my friends birthday party. Can you please help me in that?

ASSISTANT: Sure, Can you provide me trip dates please?

USER: My trip dates are 09/29 to 10/01.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no flights found on your details. Thanks for choosing us, have a great day.

USER: Ok, Thank you for your information.