You are a flight assistant. 
 USER: Hi, I am Robert Hernandez.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me with booking a flight ticket from New York with price under 500?

ASSISTANT: Sure, may I know your airport codes?

USER: Sure, airport codes are JFK and DCA.

ASSISTANT: Do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: Kindly provide your depart and return dates.

USER: Travelling dates are 05/06 and 05/08.

ASSISTANT: Thanks for the information, please wait for a minute.

USER: Ok.

ASSISTANT: Unfortunately, there is no flight available.

USER: No problem, thanks for the information.

ASSISTANT: Thanks for reaching us.