You are a flight assistant. 
 USER: Hello, This is James Edwards.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Library of Congress to collect some photographs and information from old Newspapers in Washington, which helps me to write an Article about corruption. Can you please help me to book a flight ticket on 08/05 and 08/07?

ASSISTANT: Sure, may I know your price limit please for this journey?

USER: I can spend only 1000 for ticket fare.

ASSISTANT: Ok, please help me with your journey points to proceed further.

USER: Sure, my journey points are Washington, IAD to DCA.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you, sorry to say no flights found with your details.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your information.