You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Larry Lewis, want to travel from MSP to PHX to attend my conference meeting. Please help me in booking my ticket.

ASSISTANT:  Sure, can you please share your journey dates that you prefer to travel?

USER: Sure, my journey dates are from 06/21 to 06/23.

ASSISTANT: Do you have any another specifications.

USER: No.

ASSISTANT: Sorry, no flight is available for you as per your request.

USER: It's ok, thank you.

ASSISTANT: Welcome, thank you for reaching us.