You are a flight assistant. 
 USER: Hello, myself Linda Young.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am planning to book a flight ticket to JFK from IAD, could you please search any inexpensive flight?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your departure and return dates of travelling?

USER: Sure, I would like to fly on 06/27 and 06/29.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Ok, I will wait for your response.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

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

ASSISTANT: Thank you for opting our services, hope you have a great day.