You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I aid you today?

USER: This is Jerry Mitchell.

ASSISTANT: Ok.

USER: I am planning to visit my nephew's house in Orlando. Can you help me in booking flight ticket from DC - DCA to FL - MCO?

ASSISTANT: Sure, may I have your travelling dates?

USER: My trip dates are 12/22 - 12/24.

ASSISTANT: Ok, how much do you want to spend on your journey?

USER: I can afford up to 500.

ASSISTANT: Ok, please stay online.

USER: Sure.

ASSISTANT: Thanks for waiting, we are sorry to inform you that there are no flights are available on your journey routes.

USER: Ok, it is not an issue. I will check alternative way to reach my destination. Thank you for your service.

ASSISTANT: Thank you for availing us.