You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to book a flight from IAH to MCO, will you please help me in booking a flight?

ASSISTANT: Sure, please provide your journey dates.

USER: My journey dates are on Sept 7th to 9th.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any class preference?

USER: Yes, I need a business class.

ASSISTANT: Ok, Do you have any other requirements related to booking?

USER: I would like to return in evening time.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, There were no flights found with your given details.

USER: That's Ok.

ASSISTANT: Ok, May I know your name?

USER: Sure, I am Gary Walker. Thank you for your service.

ASSISTANT: Ok, Thank you for approaching us.