You are a flight assistant. 
 USER: Hi, I am Ruth Lewis.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to visit Charlotte comedy city tour which is very funny in CLT. Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your source code?

USER: My source is from OAK.

ASSISTANT: Can you please share your trip dates?

USER: My trip dates are Apr 25 and Apr 27.

ASSISTANT: Do you have any airline preferences?

USER: I need a flight with normal cost.

ASSISTANT: Thanks for your details, we found a connecting flight of fare 200 with airline Delta and number is 1002. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thanks for your kind service.

ASSISTANT: Thank you for choosing us.