You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Steven Phillips. I need to schedule my trip on dates from 09/21 to 09/23 as I have an appointment with my family doctor. Can you please check whether there are any flights available on these dates?

ASSISTANT: Sure, I can help you with that. Can you share me your airport codes to book a flight ticket?

USER: I would like to leave from Washington DC - IAD and arrive at Charlotte, NC - CLT.

ASSISTANT: Do you need any halt or direct flight in between your journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Sure, do you prefer a economy class or business class?

USER: I am comfortable with any kind of class.

ASSISTANT: Ok, wait for a while I will check the availability of flights on your details and get back to you.

USER: Sure, take your own time.

ASSISTANT: We found AA airline with connecting flight and number 1019 and amount to be paid to buy your ticket 300.

USER: That's perfect and cheap. Please proceed with this booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your support.

ASSISTANT: Thanks for approaching us.