You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Is there any availability of flights from DTW to DCA to meet my childhood friend?

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: My planned trip dates are on July 15 and 17.

ASSISTANT: May I know your name please?

USER: Jerry Robinson here.

ASSISTANT: Is there any connection limit?

USER: I need a connected flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: Ok, thanks for your information.

ASSISTANT: Thank you very much for approaching our agency.