You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: My wish is to go for a Yosemite Adventure at Las Vegas, LAS with my friends. This is the reason, I want to book a ticket on 03/20. Will you aid me?

ASSISTANT: Sure, may I know your return date?

USER: I intend to return on 03/22.

ASSISTANT: Ok, please help me with source airport code?

USER: Philadelphia, PHL is my source point.

ASSISTANT: Ok, can I know your good name please?

USER: I am Ronald Roberts.

ASSISTANT: There is a 1009 Jet Blue airline with fare of 400. Can I proceed with booking?

USER: Ok. Proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for aiding me.

ASSISTANT: Thank you for approaching us.