You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from IAH to MSP. Can you please help me?

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are from 11/01 to 11/03.

ASSISTANT: Ok, do you have any other requirements?

USER: I want a single connection.

ASSISTANT: Well, do you have any class preference?

USER: My class preference is business class.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: It's ok, thank you.

ASSISTANT: Can I know your name please?

USER: Myself Jennifer Adams.

ASSISTANT: Ok, thank you.