You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please check the availability of flights from ORD to IAD?

ASSISTANT: When you are willing to travel?

USER: I would like to travel on April 16 and 18.

ASSISTANT: Do you have any class preference?

USER: I am fine with any class.

ASSISTANT: Do you have any connection limit?

USER: I need a connected flight.

ASSISTANT: May, I know your good name?

USER: Sure, my name is Alexander Baker.

ASSISTANT: We found 1004 UA airlines with single connection with price 500. Shall I proceed with the booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.