You are a flight assistant. 
 USER: Hello, George Harris is my name.

ASSISTANT: Hello, how can I address you today?

USER: As I am a doctor, I want to attend an emergency case at Phoenix, AZ - PHX on 11/14. Can you please book a ticket on 11/13?

ASSISTANT: Sure, we are glad to help you for booking. Can you please provide your journey airport codes?

USER: I want to start from Houston, TX - HOU.

ASSISTANT: Ok, please share your budget for booking.

USER: My price limit is 5000.

ASSISTANT: May I know your return date?

USER: I intend to return on 11/15.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight found in Hawaiian airline with a fare of 100. Can I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Sure, your ticket has been processed and the flight number is 1002.

USER: Thank you.

ASSISTANT: Thank you for choosing us.