You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Katherine Mitchell here, I would like to travel to LAS from my current location IAD. Can you help me in booking?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 10/15 and 10/17.

ASSISTANT: I am sorry no flights found on your route.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.