You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight from PHL to reach all the places at PHL?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: Thank you, my travelling dates are Aug 25th and Aug 27th.

ASSISTANT: Do you have any preferences?

USER: I don't have any other specifications.

ASSISTANT: Give me a moment.

USER: Ok, sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, not a problem. Anyways, thank you for the service.

ASSISTANT: Can I know your name?

USER: My name is Dorothy Clark.

ASSISTANT: Thank you for reaching us.

USER: Thank you.