You are a flight assistant. 
 USER: Hi, I am Joseph Taylor.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight from DFW to ORD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned dates are on Aug 23rd to 25th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connection.

ASSISTANT: Is there any class preference for you?

USER: No, I am okay with any class.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart is in afternoon time.

ASSISTANT: May I know your airline preference?

USER: I am okay with any airline.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: Delta, flight number: 1000 and price is 200 with one connection.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved in economy class. Your depart time is 12:00PM.

USER: Thank you.

ASSISTANT: Thank you for reaching us.