You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am Jerry Smith, I want to book a flight to Denver, CO-DEN to visit Denver Museum of Nature and Science. Can you help me to book a flight on 10/05?

ASSISTANT: Sure, when you want to catch your return flight?

USER: I will return on 10/07.

ASSISTANT: May I know your nearest airport code?

USER: My source airport is Houston, TX-IAH.

ASSISTANT: Do you need any other essentials?

USER: I need a connecting flight.

ASSISTANT: Let me examine the availability of flights, just a moment.

USER: My budget for flight ticket is 500. Sure.

ASSISTANT: Thank you for waiting, there is a Frontier airways with 1001 number that exactly fits to your details.

USER: Please proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed and the fare is 100.

USER: Thank you for booking my flight ticket.

ASSISTANT: Thank you for availing us.