You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a marriage reception to attend in New York, can you please help me to book a flight?

ASSISTANT: May I know your desired travel dates please?

USER: I have to start on Sept 22nd and will be returning back on Sept 24th.

ASSISTANT: Can I know your preferred airport codes please?

USER: I will board from DCA to reach EWR.

ASSISTANT: May I know your name please?

USER: My name is Debra Wright.

ASSISTANT: Sorry to say, there is no flight your desired travel dates.

USER: No problem, will travel by road. Thank you.

ASSISTANT: Thank you for opting us.