You are a flight assistant. 
 USER: Hi, I am Benjamin Wright.

ASSISTANT: Hello, how may I serve you?

USER: Please help me to book a flight ticket with in the fare limit 200 to Las Vegas, NV-LAS to attend in Comic con.

ASSISTANT: Sure, may I know your source airport code please?

USER: My nearest airport code is Chicago, IL-ORD.

ASSISTANT: Do you prefer a stopover within your journey?

USER: I need a connecting flight.

ASSISTANT: Let me know your planned dates of travel.

USER: 04/22 and 04/24 are my planned travelling dates.

ASSISTANT: Thank you for sharing your details.

USER: Ok.

ASSISTANT: We found a Hawaiian airline with flight number 1022 and price of 200 matching your preferences.

USER: Ok, please go head with the booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thank you for availing us.