You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am looking to book a flight ticket from OAK to ORD. Can you help me for that?

ASSISTANT: Sure, may I know the planned travel dates?

USER: My travelling dates are May 20 and May 22.

ASSISTANT: Please provide me the specifications.

USER: I prefer to book a single connecting flight.

ASSISTANT: May I know the name?

USER: My name is Samuel Rodriguez.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.