You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Mar 09 and 11.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any other requirements?

USER: I want to return at morning.

ASSISTANT: May I know your name?

USER: My name is Ashley Harris.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No issues, thank you for your help.

ASSISTANT: Thank you for opting us.