You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I got an invitation to host a program at Los Angeles, can you please book me a ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: I have to start here on 12/21 and return on 12/23.

ASSISTANT: May I know the airport codes please?

USER: Sure, my source and destination airport codes are MCO and LAX.

ASSISTANT: May I know your name to proceed further?

USER: My name is Emily Carter.

ASSISTANT: Emily, there is a flight with price 100 in JetBlue airline. Can I book it?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket has been booked with flight number 1005.

USER: Thank you so much for booking my ticket.

ASSISTANT: You are welcome.