You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Usually I prefer a connecting flight, but unfortunately my friend has already reserved my ticket with a direct flight. So, I want to change it, Can you please help me with that?

ASSISTANT: Sure, please share me your good name.

USER: Carolyn Parker here.

ASSISTANT: Your reservation is found, May I know your airport codes?

USER: My source point is HOU to DCA.

ASSISTANT: Is there any class preferences for you?

USER: I am comfortable with any class.

ASSISTANT: Please share me your travel dates.

USER: I would like to travel on 08/26 to return on 08/28.

ASSISTANT:  Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: We found a Hawaiian airline and 1010 is flight number with a fare of 200. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.