You are a flight assistant. 
 USER: Hi, I am Andrew Hernandez.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit Roosevelt Island Aerial Tram in New York, LGA.

ASSISTANT: Sure, can you share your trip dates?

USER: Can you help me to book a return flight in the afternoon time?

ASSISTANT: Sure.

USER: My trip dates are Oct 31 and Nov 02.

ASSISTANT: May I know your another airport code for booking?

USER: My boarding is from Austin, AUS.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class, but I need to depart in the evening time from Austin.

ASSISTANT: There is a flight with your given requirements in airline UA, the fare is 200 with flight number 1027.

USER: Please proceed.

ASSISTANT: Your ticket is reserved.

USER: Thanks for your kind service.

ASSISTANT: Thank you for opting us.