You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I am going to LAS from PHX to attend a conference. Can you book me a plane ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on Mar 16 and return on Mar 18.

ASSISTANT: Ok, can I have your good name please?

USER: I am Frank NElson. I need 1 stop over.

ASSISTANT: Ok, at what time would you like to depart and return?

USER: I would like to depart in the morning.

ASSISTANT: There are no flights found on your requested dates.

USER: That's Ok, thanks for the information.

ASSISTANT: Thank you for reaching us.