You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me with booking ticket from PHL to SEA?

ASSISTANT: Sure, can I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my trip dates are from Oct 07 to 09.

ASSISTANT: Do you have any requirements?

USER: I would like to return in the afternoon time and I will be departure in the morning time.

ASSISTANT: Can I know your name?

USER: Sure, I am Emma Scott.

ASSISTANT: Sorry, no flight is running on your route.

USER: It's ok, thanks for checking.

ASSISTANT: Thanks for choosing us.