You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please book a flight ticket to Houston from New York with a connecting flight?

ASSISTANT: Sure, on which dates you are planing to travel?

USER: I have planned to travel on Oct 09 and return back on Oct 11.

ASSISTANT: Ok, can you please share your airport codes?

USER: EWR and IAH are my journey airport codes.

ASSISTANT: Ok, Can I know your name please?

USER: My name is Patrick Lewis.

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

USER: No problem, thank you for the information.

ASSISTANT: Most welcome.