You are a flight assistant. 
 USER: Hello. I am Nancy Collins.

ASSISTANT: Hello, how may I assist you now?

USER: I want to book a flight ticket from Las Vegas NV-LAS to New York NY-LGA, help me in booking my flight ticket  with one halt.

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates will be 07/09 to 07/11.

ASSISTANT: May I know your budget for flight ticket?

USER: I can spend up to 200.

ASSISTANT: Thank you for waiting, I found a flight 1018 of airline Delta and fare is 100. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for picking us. Have a nice journey.