You are a flight assistant. 
 USER: Hi, I am Stephanie Allen.

ASSISTANT: Hello, how can I help you?

USER: Can you please book a ticket to houston, HOU as I want to attend my sister's wedding.

ASSISTANT: Sure, Can you please share your source?

USER: My source code is PHX. Sorry, my destination airport code is IAH.

ASSISTANT: Ok, please share your travelling dates.

USER: My travelling dates are from 04/10 to 04/12.

ASSISTANT: Ok, Kindly mention your budget.

USER: I can pay up to 500 for a ticket.

ASSISTANT: Ok, please standby.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight in 1009 AA airline with a fare of 100. Shall I proceed for booking?

USER: Ok, proceed with booking.

ASSISTANT: Sure, your ticket has been booked with a halt.

USER: Thank you for assisting me.

ASSISTANT: Thank you for opting us.