You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I need to buy a plane ticket. Please help me with that.

ASSISTANT: Sure, can you share your airport codes?

USER: My airport code are LAS and HOU.

ASSISTANT: May I know your journey dates?

USER: My trip dates are from Sept, 15 to Sept, 17.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: I am Pamela Lopez.

ASSISTANT: There is a connecting flight with number 1004 in airline Spirit airline, the fare is 100 in economy flight. Can I book it?

USER: Please do not proceed, I need normal-cost airlines to fly.

ASSISTANT: Give me a minute for checking in normal-cost airline.

USER: Sure, please take your time.

ASSISTANT: There is a connecting flight with number 1012 in airline Hawaiian, the fare is 200 in economy class. Can I book it?

USER: Please proceed.

ASSISTANT: Your ticket is reserved, the depart time is 11:00 hours and return time is 19:00 hours.

USER: Thank you for your excellent service.

ASSISTANT: Thank you for reaching us.