You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Samantha Wright. In New York there is a work shop about Petrol Engines, so I need to attend the workshop to gain More knowledge.

ASSISTANT: Ok, please provide me your travel dates?

USER: Could you please help me in booking a ticket to DEN? My travelling dates are 11/25 and return on 11/27.

ASSISTANT:  Help me with your source point?

USER: My source code is Charlotte CLT.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  Sorry, no flights are available on your travel dates.

USER: No problem, thank you for your information.

ASSISTANT:  Thank you for availing us.