You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Richard Hernandez. I want to travel on 08/20 to 08/22, help me in finding a flight?

ASSISTANT: Richard, please share your airport codes.

USER: My airport codes are LGA to IAH. I want single connecting flight.

ASSISTANT: Sorry, no flights found on your route.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thanks for helping me.