You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Steven Robinson. I would like to travel from IAD to SEA.

ASSISTANT: Ok, please help me with your travelling dates.

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

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

USER: That's ok. Thank you, have a good day.

ASSISTANT: You are welcome.