You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is George Lee, I want to book a flight in morning from Houston to reach New York. Can you book a connecting flight for me?

ASSISTANT: Sure, can I know the travel dates please?

USER: I will fly on July 21 and return on July 23.

ASSISTANT: Could you please provide the airport codes?

USER: My source point is IAH and my destination is LGA.

ASSISTANT: Sorry, there are no flights found as per your request.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.