You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, American Airlines. How may I assist you today?

USER: I'm looking to book a ticket from ORD to LAS.

ASSISTANT: Sure, please provide your trip dates.

USER: My departure date would be April 4th and return date is April 6th.

ASSISTANT: Please hold on, let me check for the available flights.

USER: Sure.

ASSISTANT: According to your request, there is a flight 1004 of JetBlue airlines available for you. Shall I proceed?

USER: What would it cost me?

ASSISTANT: Flight cost is 300.

USER: Great, that's in my budget, book it then.

ASSISTANT: For booking purpose may I know your name?

USER: Oh yes, I forgot to mention that. Please book it under the name Gregory Hall please.

ASSISTANT: Your ticket has been reserved for the date of 04/04.

USER: Thank you. You have a good day ahead.

ASSISTANT: Thanks for contacting us, have a safe journey.