You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Campbell.

ASSISTANT: How may I assist you?

USER: Can you please make my reservation from IAD to MCO?

ASSISTANT: Sure, I am her to help you out. May I know you travelling dates please?

USER: My travelling dates are Apr 07 and Apr 09.

ASSISTANT: How much you can afford for airfare?

USER: I can afford 200.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Richard Campbell, there are no flights available in your route.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.