You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jessica Harris.

ASSISTANT: How can I aid you at this moment?

USER: I am looking for a flight from DEN to PHL, can you reserve me a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are from 01/18 till 01/20.

ASSISTANT: Here, I found a flight in UA airlines and airfare is about 100. Shall I proceed in booking?

USER: Please proceed with it.

ASSISTANT: Your ticket has been confirmed for the flight 1003, have a safe journey.

USER: Thank you for your help in booking the flight ticket.

ASSISTANT: Thank you for reaching us.