You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sandra Gonzalez here.

ASSISTANT: How may I help you?

USER: Reserve a flight ticket for me that is from HOU to AUS. I am looking for a flight ticket price below 5000.

ASSISTANT: Sure, please provide your trip dates.

USER: My travel dates are 01/26 to 01/28.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: I found a flight for you in Southwest airlines with price 100. Can I proceed?

USER: Sure.

ASSISTANT: Ok, your ticket has been booked with flight number 1012.

USER: Thank you.

ASSISTANT: Thank you for approaching us.