You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your help?

USER: This is Katherine Baker, can you help me to book a flight ticket from MSP to PHX?

ASSISTANT: Sure, please share your planned travel dates.

USER: I am travelling from Feb 15 to Feb 17.

ASSISTANT: Do you prefer either economy or business class?

USER: I prefer business class.

ASSISTANT: Please let me know if you have any other preference.

USER: Yes, I need a halt in between my journey.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight available on given dates from you.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you. We hope to serve you better next time.