You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I am Andrew Lee. Could you help me in booking a flight ticket from TX - DFW to WA - SEA?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I want to fly on Oct 12, return on Oct 14.

ASSISTANT: In which class do you want to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: You have a flight 1000 in Hawaiian airline and price 100 with a connection, Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.