You are a flight assistant. 
 USER: Hello. I am Kenneth Clark.

ASSISTANT: Hello, how may I help you  today?

USER: I need to book a direct flight because it is an emergency in my family. Could you please help me in booking a ticket  with fare of 1000?

ASSISTANT: Sure, we are glad to help you. Can you  please help me with providing your journey points?

USER: My journey points are DEN and IAD.

ASSISTANT: When would you like to  travel?

USER: My travelling dates are 07/27 and return on 07/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry we did not find any flight matching your specifications.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.