You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend for an interview in Oakland, so please book a flight ticket from CLT to OAK.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I will start on Mar 03, return on Mar 05.

ASSISTANT: Do you have any specifications?

USER: I want economy class flight ticket. And I want a flight with one connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please provide your name.

USER: My name is Gary Wilson.

ASSISTANT: There are no flights found under your preferable details.

USER: Not an issue, thank you.

ASSISTANT: Welcome, have a great day.