You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from LGA to LAS. Can you please book a direct flight ticket?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are July 23 and July 25.

ASSISTANT: Do you have any specifications to be met?

USER: No.

ASSISTANT: Are you looking for any preferred class?

USER: I prefer a economy class.

ASSISTANT: We have found a direct flight of JetBlue airline, flight number-1003 class-economy and fare is 100. Would you like  me to proceed?

USER: Go ahead.

ASSISTANT: Can I have your name to book the ticket?

USER: I am Larry Jones.

ASSISTANT: Sure, your reservation has been done.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.