You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you at present?

USER: Can you please help me to book a flight from ORD to SEA?

ASSISTANT: Sure, may I know on what dates you prefer to travel?

USER: Sure, I want to travel on Apr 17 and need to return on Apr 19.

ASSISTANT: For booking purpose I required your name, can I know your name?

USER: I am David Jones.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in Frontier airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: Ok, please proceed.

ASSISTANT: Your booking is done with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.