You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I help you?

USER: I am Elizabeth Anderson. I want to go to my grandmother memorial service at Oakland, CA - OAK. Can you please help me in booking?

ASSISTANT: Please provide your travelling dates?

USER: I want to travel on 06/07, and need to catch return flight on 06/09.

ASSISTANT: Please provide your boarding airport code?

USER: I want to board from DEN.

ASSISTANT: Ticket can be booked with flight number 1024, connections 1, airline Spirit having price 100. Shall I book a ticket?

USER: Proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the help.

ASSISTANT: Thank you.