You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amanda Hall.

ASSISTANT: How can I aid you today?

USER: Can you please help me in booking my flight ticket from ORD to IAD?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are May 17 and May 19.

ASSISTANT: Do you need any other requirements?

USER: I need my flight ticket at afternoon time.

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

USER: I want connecting flight in between my trip. Can you please recheck with that?

ASSISTANT: There is no flight available on your route according to your given dates.

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you.