You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Jessica Gonzalez. I want to book a flight ticket on 10/28 and 10/30 to attend a meeting, can you help me?

ASSISTANT: Sure, I will help you out. Please provide me your location airport codes.

USER: Sure, the airport regions are from HOU to LAS.

ASSISTANT: Sorry Jessica, here I didn't find any flight in your route.

USER: Ok, no issues with that, I can reach other booking agencies when I planned any other trip dates.

ASSISTANT: Ok, thank you for reaching us.

USER: Most welcome.