You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, can I know the travel dates please?

USER: I want to travel on 27 Jan and return on 29 Jan.

ASSISTANT: May I know your name please?

USER: Kenneth Taylor.

ASSISTANT: Do you have any requirements?

USER: I am looking for single connection flight.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for approaching us.