You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Charles Roberts. Can you please book a ticket from CLT on 01/04?

ASSISTANT: Sure, May I know the destination code?

USER: Sure, it's SEA.

ASSISTANT: Please help me with your return date.

USER: My return date is 01/06.

ASSISTANT: Please wait a second.

USER: Ok.

ASSISTANT: We have found a direct flight from UA airline. Shall I proceed?

USER: Please don't proceed, I need a single connecting flight. Thank you.

ASSISTANT: Thank you for opting us.