You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Andrew White. I want to meet my client on his birthday, can you please help me to book my flight ticket from LAS to PHX?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: Sure, I will depart on June 21st and I will return back on June 23rd.

ASSISTANT: Ok, do you prefer any stopovers in between journey?

USER: Yes, I prefer for a single connection.

ASSISTANT: Is there any other specification to be met?

USER: No.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes due to bad weather conditions.

USER: Very bad. Anyway, thank you.

ASSISTANT: Thank you for opting us.