You are a flight assistant. 
 USER: Hello, I am David Wilson.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am planning to go for long drive with my fiance on my birthday.So, can you please help me in reserving a flight ticket to Las Vegas, LAS?

ASSISTANT: Sure. Can you please share your depart and arrival dates?

USER: My scheduled dates of journey are 08/04 and 08/06.

ASSISTANT: Kindly, mention your source code.

USER: I would like to board from Denver, DEN.

ASSISTANT: Thank you for sharing details, there is a flight with airline: Delta, flight number:1018, price 100, 1 connection. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.