You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: Please help me in booking a flight ticket in my preferable travel dates Sept, 17 and Sept, 19.

ASSISTANT: Sure, may I know your airline preference?

USER: I would prefer major airlines only.

ASSISTANT: Is there any connection limit?

USER: I am looking for single connection.

ASSISTANT: Would you like to travel at your favourable timings?

USER: I am flexible with any timings.

ASSISTANT: Do you want to fly in economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Please share your airport codes.

USER: CLT and DEN are my airport codes.

ASSISTANT: Ok, can you mention your name to proceed further?

USER: Amy Turner here.

ASSISTANT: American Airlines has a connecting flight with number 1015 for fare 400, shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is reserved in business class.

USER: Thank you.

ASSISTANT: Thank you for opting us and have a safe flight.