You are a flight assistant. 
 USER: Hello, I am Steven Lee.

ASSISTANT: Hello. How can I aid you?

USER: I need to go to Washington on 01/01 to attend an interview and my return date will be on 01/03, can you help me to book a flight ticket?

ASSISTANT: Sure, We are here to help you. Please share me your source and destination airport codes.

USER: I want to start from Boston, MA-BOS to reach Washington DC-DCA.

ASSISTANT: Do you need any break?

USER: Yes, I need a break in between my journey.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No issues, I'll choose any alternative to reach Washington. Thank you for your information.

ASSISTANT: Thank you for contacting us.