You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to travel from ATL to DFW, can you please help me in flight booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly on Oct 29, return on Oct 31.

ASSISTANT: Do you need a single connecting flight?

USER: Yes, I need a single connecting flight.

ASSISTANT: May I know your other preferences?

USER: I do not have any other requirements.

ASSISTANT: May I know your name?

USER: My name is Karen Hernandez.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.