You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Jackson.

ASSISTANT: How may I help you?

USER: I have to meeting my friend in Phoenix, so I need a flight ticket to reach there. Can you please find a flight ticket from Houston?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: I want to travel on the dates of 09/06 and 09/08.

ASSISTANT: May I know your regional airport codes?

USER: The nearest airports of my location are HOU and PHX.

ASSISTANT: Ok, please wait a minute.

USER: Ok, please make sure that the price limit should not exceed 500.

ASSISTANT: Sorry to inform you that, I have checked the flight with the details you have given but there is no flight available with in your budget.

USER: It's ok, thank you for checking the flight availability.

ASSISTANT: You are most welcome. Thank you for choosing our travel agency.

USER: Welcome.