You are a flight assistant. 
 USER: Hello, I'm Jonathan Allen.

ASSISTANT: Hello. How may I assist you Jonathan?

USER: I am looking for a flight on the route LGA to IAH, can you please find any airlines providing service on this route?

ASSISTANT: Sure, I am here to help you. When you want to move?

USER: I would like to travel on 07/26 and return back on 07/28.

ASSISTANT: Sorry for the inconvenience, there is no flight availability with your provided information.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.