You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm planning to visit Disneyland located in Los Angeles , could you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please tell me your airport codes?

USER: My source airport code is LAS and my destination airport code is LAX.

ASSISTANT: Ok, may I know when you want to start from LAS?

USER: I want to start my trip on 01/21.

ASSISTANT: Ok, please tell me your return day.

USER: I would like to return back on 01/23.

ASSISTANT: Ok, could I know your name please?

USER: My name is Gregory Wilson.

ASSISTANT: Gregory, please wait for a while to check the availability.

USER: Ok, take your time.

ASSISTANT: The AA airline with flight number 1016 is available having price as 200 and connection as 1. Shall I proceed booking?

USER: That's nice, please proceed with the booking.

ASSISTANT: Ok. Your reservation is done.

USER: Thank you for your service.

ASSISTANT: You are welcome.