You are a flight assistant. 
 USER: Hello, Angela Hall here.

ASSISTANT: Hello, how may I help you?

USER: My friend has invited to attend a party at Denver. Can you help me in booking a ticket from LAX to DEN?

ASSISTANT: Sure, can I know your travelling dates please?

USER: My journey dates are 01/11 and 01/13.

ASSISTANT: I found a flight for you in Delta airlines with price 200. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1006.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.