You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to travel from Las Vegas to Washington to meet my uncle, can you help me in booking?

ASSISTANT: Sure, can you share your travelling dates?

USER: My departure date is on 10/15 and return on 10/17.

ASSISTANT: Help me with your airport codes.

USER: I am departing from Las Vegas LAS airport and land in Washington DCA airport.

ASSISTANT: May I know your name?

USER: My name is Kathleen Scott.

ASSISTANT: There is a connecting flight with fare 100, the number is 1012 in airline AA.

USER: I like the service of American Airlines, please proceed for booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.