You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit Chicago, will you help me in booking the flight ticket from IAH to ORD?

ASSISTANT: Sure, can you please share me your travelling dates?

USER: My travel dates are Apr 18 and Apr 20.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Is there any other specifications in your journey?

USER: I would like to depart in afternoon time.

ASSISTANT: May I know your name?

USER: Myself Williams Evans.

ASSISTANT: We found 1000 Southwest Airlines with single connection and price of 300, shall I proceed with booking?

USER: Sure you can proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.