You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for a flight from BOS to IAH, can you please help me in booking?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My travelling dates are July 04 and July 06.

ASSISTANT: Are you looking for any preferred connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications to be met?

USER: I prefer business class.

ASSISTANT: Can I have your name to proceed further?

USER: Myself Samuel Gonzalez.

ASSISTANT: Ok, please wait a moment.

USER: sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for reaching us.