You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I'm Joseph walker planning to have my vacation in Denver, can you book a ticket from BOS to DEN?

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

USER: Sure, my travel dates are 04/30 and 05/02.

ASSISTANT: Please, wait for few minutes, let me check the details.

USER: Ok.

ASSISTANT: Thank you, for waiting. We found a ticket regarding your details. Flight number is 1001, airline is Spirit with single connection and price of 200.

USER: That's perfect! Proceed with my booking.

ASSISTANT: Sure, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you, for reaching us.