You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Kenneth Johnson, can you help me to book a flight with 0 connection?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are 11/07 and 11/09.

ASSISTANT: May I know your airport codes?

USER: My preferred airport codes are DCA and LAX.

ASSISTANT: Sorry, there are no flights regarding your details.

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

ASSISTANT: Thank you for reaching us.