You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Melissa Nelson. I want to visit Cloud Gate. Can you please help me to book a ticket?

ASSISTANT: Sure, may I know your nearest airport codes please?

USER: My source code is ORD and my destination code BOS.

ASSISTANT: May I know your travel dates please?

USER: I am planning to travel on 02/23 and I will planning to return back on 02/25.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Hawaiian airlines is available on this route, with a ticket fare of 100. Can I proceed with that?

USER: Please proceed for that.

ASSISTANT: Melissa Nelson, your ticket has been booked successfully with flight number 1000.

USER: Thank you very much for booking my ticket.

ASSISTANT: Thank you for approaching us.