You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I need your help in booking a flight ticket from IAH to HOU.

ASSISTANT: I am happy to assist you about that. Can you please provide your planned dates of journey?

USER: October 27 and 29 are my planned travelling dates.

ASSISTANT: Firstly, please provide your name.

USER: Ok. My name is Kevin Nelson.

ASSISTANT: Would you like to travel in a direct flight or a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements for your journey?

USER: I prefer to fly in a business class airlines.

ASSISTANT: Sorry to say this Kevin Nelson, there are no flights which travels on your route on your planned dates of journey.

USER: That's ok. Thank you.

ASSISTANT: You are welcome, thank you for reaching us.