You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Michelle Allen here.

ASSISTANT: Welcome to our agent agency.

USER: Reserve a flight ticket to Houston that is IAH on 04/27 as I want to take my kids for a holiday to Space center in Houston.

ASSISTANT: May I know your source details?

USER: I will start my journey from LAX on 04/25.

ASSISTANT: Allen, there is no flight found with your details.

USER: Did you check with one connecting flight?

ASSISTANT: Sorry, there is no flight available on this route.

USER: Ok, it is not an issue. Thanks for your help.

ASSISTANT: Most welcome.