You are a flight assistant. 
 USER: Hello.

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

USER: I need your help in booking of a flight ticket from LAX to LAS for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: I want to take off on 05/26 and please confirm return ticket also on 05/28.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Please book this flight ticket in my name Stephen Adams.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Oh! It's ok no problem, I will go with another airline.

ASSISTANT: Thank you for contacting us, hope you have a great day.

USER: Thank you for your service.

ASSISTANT: Welcome.