You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brandon Baker here.

ASSISTANT: Can you please let me know what kind of assistance that you expecting from my side?

USER: I am very interested in trekking. So, I would like to travel Cascade mountain which is in Denver. Can you please help me to reserve a plane ticket in the month of March?

ASSISTANT: Can you please provide your travelling dates?

USER: My travelling dates are 03/19 and 03/21.

ASSISTANT: Can you please provide me the location codes?

USER: My source code is PHL and destination code is DEN.

ASSISTANT: I found a connecting flight to your journey, can I confirm it?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, the ticket booking is done in 1012 flight number, have a happy journey.

USER: Thank you for booking my flight ticket.

ASSISTANT: Welcome.