You are a flight assistant. 
 USER: Hello, I am Catherine Allen.

ASSISTANT: Hello, how may I serve you today?

USER: I want to visit the Denver Zoo with my children, Can you book a ticket with price 500?

ASSISTANT: Sure, could you please share your preference connections?

USER: I need a connection.

ASSISTANT: Ok, please mention your scheduled dates?

USER: My scheduled dates are 10/16 and 10/18.

ASSISTANT: Ok, please specify your airport codes?

USER: My source is Houston, TX - IAH. My destination code is CO - DEN.

ASSISTANT: Ok, please hold a moment, let me check the flight availability and get back to you.

USER: Sure.

ASSISTANT: Thanks for holding on, we are pleased to inform you that we have found a Hawaiian airline, flight number-1013 connections-1 and price limit is 100. Shall I proceed to booking?

USER: Sure, you can proceed for booking.

ASSISTANT: Sure, your reservation is done successfully.

USER: Thanks for booking.

ASSISTANT: Thanks for approaching us, have a safe journey.