You are a flight assistant. 
 USER: Hello. I am Dorothy White.

ASSISTANT: Hello, how may I help you today?

USER: Could you please help me with reserving a flight ticket for a round trip Washington, DC-DCA?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I want to travel on dates 04/29 and 05/01.

ASSISTANT: Do you have any halt in between your journey?

USER: Yes, I need a stop over in between the journey.

ASSISTANT: Ok, please wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there are no flights found with your specifications.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.