You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to search a flight from DC-DCA to DC-IAD?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: The travelling dates are 10/31 to 11/02.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: Ok, no problem.

ASSISTANT: May I know your name?

USER: My name is Amanda Harris.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your help.