You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Ashley Edwards. I want to book a ticket to PA-PHL from CO-DEN to meet my brother. Can you book a connecting flight?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are 06/27 and 06/29.

ASSISTANT: Ok, please be on hold for a moment.

USER: Ok.

ASSISTANT: Sorry, we don't have flights on your dates.

USER: Thank you for your response.

ASSISTANT: Thank you for picking us.