You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking a flight ticket from BOS to DCA?

ASSISTANT: Sure, May I know your travelling dates?

USER: I want to travel on 06/07, and return on 06/09.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey.

ASSISTANT: Are there any preferences?

USER: I want to depart in the afternoon time.

ASSISTANT: May I know your name?

USER: I am Cynthia Taylor.

ASSISTANT: Sorry, there are no flights found with your data.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.