You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name, Please?

USER: My name is Brian Lewis.

ASSISTANT: How may I help you for the day?

USER: I want to book a flight ticket with a price limit of 5000 for attending my sister's marriage in San Francisco.

ASSISTANT: OK.

USER: My departure day is 01/18, return day is 01/20.

ASSISTANT: May I know your airport codes, Please?

USER: My source and destination airport codes are MN-MSP, CA-SFO.

ASSISTANT: Please, Share your connections limit.

USER: Connections limit is one.

ASSISTANT: We are very happy to inform you that, We found a flight with Delta airline having flight number:1003 and price:100 matching your requirements. Shall I proceed with the ticket booking?

USER: Yes, please.

ASSISTANT: Your ticket is booked.

USER: Thanks for your service.

ASSISTANT: Thank you, For choosing us to book your ticket. Have a great journey.