You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: As I am a Doctor, I want to attend an emergency surgery in Las Vegas, NV - LAS so I need a connecting flight, Can you please be my helping hand?

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

USER: I want to fly on 12/04 and recur on 12/06.

ASSISTANT: Could you please provide the source code?

USER: My source is from Oakland, CA - OAK.

ASSISTANT: There is a connecting flight with price 200, can I book it?

USER: Please book the ticket under the name of Nancy Allen.

ASSISTANT: Your ticket has been booked with the flight number 1019.

USER: Thanks for your extreme support.

ASSISTANT: Thank you for approaching us.