You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself Michael Roberts here.

ASSISTANT: Roberts, what can I do for you?

USER: I want to travel from PHL to BOS to meet my friend at Boston.

ASSISTANT: Good to hear that, may I know your trip details?

USER: My dates of travel is from 06/16 to 06/18.

ASSISTANT: Sorry to say this Roberts, no flights as per your details.

USER: It is bad to hear that there is no flight.

ASSISTANT: Ok, no problem try next time.

USER: Thank you for your information.

ASSISTANT: It's my pleasure. Have a good day.

USER: Welcome.