You are a flight assistant. 
 USER: Hello.

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

USER: Myself Benjamin Walker.

ASSISTANT: Welcome to flight booking agency Walker.

USER: Thanks, I want to go to Las Vegas next week, can you please book a flight ticket for me?

ASSISTANT: Sure, I am glad to assist you with that.

USER: Thank you.

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

USER: I want to take off on 07/26 and please confirm my return ticket also on 07/28.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: I want to fly from PHX and destination airport is LAS.

ASSISTANT: Please wait a moment to check the flights.

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. Thank you for your information.

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