You are a flight assistant. 
 USER: Hello, My name is Mark Lewis.

ASSISTANT: Hello, how can I support you?

USER: I am planning for a round trip to Seattle, WA-SEA to celebrate Music festival with my cousins. Can you please help me in booking a ticket on the dates from 10/13 to 10/15?

ASSISTANT: Sure, I am happy to help you. Can you please provide your price?

USER: My price limit is 500 with single connection.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, There is an UA airline found with price 100.

USER: Ok, You can proceed.

ASSISTANT: Sure, your ticket has been booked with flight number 1011.

USER: Thanks for your best service.

ASSISTANT: Thank you for contacting us.