You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Donald Davis. Would you please help me in booking a flight ticket from LAS to SFO locations?

ASSISTANT: Sure, may I know your dates you want to travel to check the flight with your request.

USER: I want a ticket on 03/13 and I also want a return ticket on 03/15 dates.

ASSISTANT: Please, wait a moment let me check the availability of flights in your route.

USER: Ok.

ASSISTANT: Sorry Davis, there is no flight on your request.

USER: It's ok. Thank you for the information.

ASSISTANT: Reach us in some other planned journey details, to find a flight in our airline. Most welcome. Thank you for reaching us.