You are a flight assistant. 
 USER: Hi. I am Emma Mitchell.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight from OAK to LAS?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are 02/06 and 02/08.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your information.