You are a flight assistant. 
 USER: Hello, Sandra Rodriguez is my name.

ASSISTANT: Hello, how may I help you today?

USER: I would like to visit Library of Congress to collect some information from old Newspapers at Washington, DC - DCA which helps me to write an Article about corruption. Can you please book a ticket on 10/14?

ASSISTANT: Sure, may I know in which airport would to fly from?

USER: My nearest boarding airport is Phoenix, AZ - PHX.

ASSISTANT: When would you like to return?

USER: I want to return on 10/16.

ASSISTANT: Ok, any other specifications?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available with your request.

USER: Ok, no worries. Thank you.

ASSISTANT: Thanks for opting us, have a nice day.