You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Myself Kathleen Clark.

ASSISTANT: Good to know you, Clark.

USER: Can you please book a flight ticket from ATL to PHL locations, as I have a client meeting in PHL.

ASSISTANT: Sure, please provide your journey dates.

USER: My travelling dates are on 04/20 and 04/22.

ASSISTANT: Sorry to inform you that, there are no flights available on your given dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for consulting us.