You are a flight assistant. 
 USER: Hello. My name is Larry Brown.

ASSISTANT: Hello. How may I assist you?

USER: I want to visit Zoo in Houston, could you help me in booking the ticket?

ASSISTANT: Sure, please provide me your travelling dates?

USER: It's from PHX to IAH. The dates of travel are from 09/17 to 09/19.

ASSISTANT: Please, wait a moment.

USER: Ok.

ASSISTANT: We found a flight on your dates and codes.

USER: Please book the ticket.

ASSISTANT: Your ticket has been booked, flight number is 1014 with AA airline. Thank you for choosing us.

USER: Thank you for your help.