You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Stephanie Carter. I would like to book a ticket from IAH to SEA, can you please help me out?

ASSISTANT: When you are willing to travel?

USER: I am travelling on these dates September 9th and 11th.

ASSISTANT: Do you have any other requirements?

USER: I prefer departure time afternoon.

ASSISTANT: May I know your connecting limit?

USER: I prefer  return time afternoon. I need a single connected.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.