You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Amanda Johnson. Can you please help me in booking a flight ticket to DCA from IAD?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are from Mar 23 to Mar 25.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I would like to depart in the morning and return in the morning.

ASSISTANT: Amanda Johnson, I am sorry to inform you that there is no flight available at your request.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.