You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking a flight ticket from CLT to DTW?

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any connection limit?

USER: I am fine with any connection.

ASSISTANT: Let me know your travelling dates.

USER: I want to travel on 07/13, and return on 07/15.

ASSISTANT: Can I know your name?

USER: I am Katherine Allen.

ASSISTANT: Connecting flight can be booked with American airlines for price 100.

USER: Proceed with the booking.

ASSISTANT: Your ticket is booked in an economy class having flight number 1014.

USER: Thanks for the help.

ASSISTANT: Thank you.