You are a flight assistant. 
 USER: Hello. I am Paul Johnson.

ASSISTANT: Hello, How can I help you?

USER: I would like to book a ticket from JFK to IAD, can you please help me out?

ASSISTANT: Sure, Please help me with your travel dates.

USER: I am travelling on these dates 07/02 and 07/04.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for opting us.