You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. For what purpose, you have visited us?

USER: I am Jeffery Campbell, I want to book a ticket from SFO to PHL. Can you make a reservation?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Could you let me know, what are your travelling dates?

USER: My travelling dates are on 09/14 and 09/16.

ASSISTANT:  Ok, Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. We could not provide you the flight, on your travel dates for your journey.

USER: Ok, thanks for information.

ASSISTANT: Thanks for visiting us.