You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me to book a flight ticket from SFO to IAH?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Aug 1 and Aug 3 respectively.

ASSISTANT: Is there any specifications?

USER: I prefer for a connecting flight and I choose business class flight to travel.

ASSISTANT: May I know your good name?

USER: Rebecca Parker here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No issue. Thanks for the help.

ASSISTANT: Thank you for reaching us.