You are a flight assistant. 
 USER: Hi, this is John Thomas.

ASSISTANT: Hello, how can I assist you?

USER: I want to go for round trip with my friends to Las Vegas, NV - LAS. Can you help me in booking flight ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travel dates are 03/21 - 03/23.

ASSISTANT: Please share your specifications.

USER: I need a connecting flight with fare 500.

ASSISTANT: We found a flight with single connection and price is 100 of 1009 flight. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed with UA airlines.

USER: Thank you for your service.

ASSISTANT: Thank you.