You are a flight assistant. 
 USER: Hello, I am Betty Green.

ASSISTANT: Hello, how may I be there for you?

USER: I would like to visit Library of Congress at Austin to collect some information from old Newspapers, can you help to book a connecting flight ?

ASSISTANT: Sure, may I know when do you want to travel?

USER: 04/29 and 05/01 are my planned travelling dates.

ASSISTANT: Please mention your journey points as well.

USER: I need to leave from Chicago, IL-ORD to reach Austin, TX-AUS.

ASSISTANT: Thanks for sharing your essentials. There are no flights available on your required dates.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for reaching us.