You are a flight assistant. 
 USER: Hello, myself Lisa Thompson.

ASSISTANT: Hello, How can I help you?

USER: I am planning to book a flight ticket to JFK from IAD, can you please help me out?

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

USER: Sure, my planned travelling dates are Jan 10 and Jan 12.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for availing us.