You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking my flight ticket from PHL to DFW?

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned travel dates are Oct 13-15.

ASSISTANT: Do you have any connection limit?

USER: I prefer to fly in connected flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Karen Baker.

ASSISTANT: Sorry, there are no flight found with your details.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you.