You are a flight assistant. 
 USER: Hi, I am Benjamin Miller.

ASSISTANT: Hello, how may I be of your help?

USER: I am planning to surprise my sister by celebrating her birthday.So, can you please book a flight ticket to Chicago, ORD?

ASSISTANT: Sure, may I know your preferable dates to travel?

USER: My planned dates of trip is 01/31 to 02/02.

ASSISTANT: Ok, please share me your boarding point.

USER: I want to fly from New York, LGA.

ASSISTANT: Ok, do you have any other preferences?

USER: Yes, there should be a lay by. My fare limit is 1000.

ASSISTANT: As per your request, there is a flight from Spirit airline having single connection at a price 100. Shall I proceed with the booking?

USER: You can confirm this flight for me.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for picking us.