You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am looking for connecting flight in business class from IAH to DEN, can you help me out?

ASSISTANT: Sure, may I know the planned travel dates?

USER: My trip dates are from Oct 31st till Nov 2nd.

ASSISTANT: Please provide me the name.

USER: Myself Raymond Green.

ASSISTANT: Is there any timing concerns for this journey?

USER: Please check my return flight in evening session only.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.