You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: My name is Kathleen Harris. I want to visit my brother and come back, could you help me out?

ASSISTANT: Sure, please help me by sharing your airport codes.

USER: My source and destination are same which is BOS.

ASSISTANT: Ok, please tell me your trip dates.

USER: I would like to depart on 09/20 to 09/22.

ASSISTANT: Delta airline is available with flight number 1010. Do you want me to proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Most welcome.