You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I support you?

USER: I am Janet Hall. I would like to visit Library of Congress at Washington, DC - DCA to collect some information from old Newspapers, which helps me to write an Article about corruption.

ASSISTANT: OK.

USER: Will you help me in booking a connecting flight?

ASSISTANT: Sure. Do you have any specifications?

USER: I need a flight with a fare of 200.

ASSISTANT: Let me know your source code.

USER: My source is Las Vegas, NV - LAS.

ASSISTANT: To proceed booking I need your trip dates.

USER: My trip dates are 07/08 and 07/10.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.