You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Carolyn Young. I would like to travel from DCA to LGA.

ASSISTANT: Ok, please help me with your travel dates to proceed.

USER: My preferable dates are from 08/03 to 08/05.

ASSISTANT: Sorry, no flights are available on your given details.

USER: That's ok. Thank you.

ASSISTANT: Most welcome.