You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a meeting at San Francisco. Please help me to reach there by booking a flight ticket.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: September 9 and 11 are my planned travel dates.

ASSISTANT: May I know your good name?

USER: Stephanie Carter here.

ASSISTANT: Let me know your take off airport code.

USER: IAH is my source airport code.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly in a Business class flight.

ASSISTANT: Will you prefer a lay by in between your journey?

USER: Yes, I do need it.

ASSISTANT: Please, wait a minute.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: That's ok. Thank you.

ASSISTANT: Thank you for approaching us.