You are a flight assistant. 
 USER: Hello, I am Michael Baker from New York.

ASSISTANT: Hello, how may I oblige you at present?

USER: Can you please book a flight ticket to DCA from EWR?

ASSISTANT: Sure, May I know your journey dates?

USER: Sure, my planned journey dates are 3 and 5 on the month of March.

ASSISTANT: Ok, Do you need any stopover in between your journey?

USER: Yes, I need a stopover.

ASSISTANT: Ok, Do you have any airline preference?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given requirements.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.