You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from IAD to IAH. Could you help me in booking?

ASSISTANT: Sure, when you are willing to travel?

USER: My travelling dates are Feb,07 and Feb,09.

ASSISTANT: May I know your good name?

USER: Myself Kimberly Brown.

ASSISTANT: Is there any connection limit?

USER: I prefer one connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No other specifications needed.

ASSISTANT: Sorry to say that, there is no flight on your required dates.

USER: That's ok, I will choose any alternate source to reach my destination.

ASSISTANT: Ok. Thank you for choosing us.

USER: Thank you for the information.