You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Kevin Thomas, help me in booking my flight ticket from PHL to JFK.

ASSISTANT: Sure, I am happy to help you with that. Can I know your travelling dates?

USER: My travelling dates will be Jan 13th to Jan 15th.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me your other preferences if any?

USER: Sure,make sure that the flight should depart in the morning.

ASSISTANT: Sorry to inform you that, there are no flights found which is departing in the morning time.

USER: Its ok, thank you.

ASSISTANT: You are welcome. Thank you for opting us.