You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am John Harris. I want to spend my free time with my family at Francisco, can you please help me to book a flight ticket from ORD to SFO?

ASSISTANT: Sure, I am happy to help you. May I know your travel dates?

USER: Sure, my departure on Sept 25 and my arrival on Sept 27.

ASSISTANT: Ok, do you have any class preferences?

USER: I am comfortable with any class to travel.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Flight-1027 is available with Southwest airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: Ok, please proceed.

ASSISTANT: John Harris, your ticket is confirmed successfully. Have a great flight.

USER: Thank you for your help.

ASSISTANT: You are welcome and thank you for choosing us.