You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: As I am a scientist, I want to attend science festival with my students at Denver, DEN. Can you help me to book a ticket from Oakland, OAK?

ASSISTANT: Sure, may I know your good name please?

USER: Stephanie Lewis here.

ASSISTANT: Please share your planned journey dates.

USER: Dates are 04/16 and 04/18.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: I found a Delta airline, flight number: 1028, price: 100 with one connection. Shall I proceed for booking?

USER: Go ahead.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you so much.

ASSISTANT: Thank you.