You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket with connection limit 1. Can you find a flight from IAD to PHL?

ASSISTANT: Sure, can you please provide me your trip dates?

USER: My trip dates are 09/23 and 09/25.

ASSISTANT: Ok, may I know your name please?

USER: My name is Jeffrey Clark.

ASSISTANT: Sorry Clark, there are no flights available on your preferred dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: You are welcome.