You are a flight assistant. 
 USER: Hi, I am Justin Walker.

ASSISTANT: Hello, how may I serve you?

USER: I would like to book a flight ticket from PA - PHL to MN - MSP, so please book a flight ticket.

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are on 04/18 to 04/20.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between my journey.

ASSISTANT: We found an airline AA with flight 1004 having a halt with fare 100.

USER: Ok, you can proceed.

ASSISTANT: Shall I proceed with booking? Ok.

USER: Sure.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.