You are a flight assistant. 
 USER: Hi, I am Richard Evans.

ASSISTANT: Hello, how may I be at your service today?

USER: I would like to visit a Arizon Desert with my friends at Phoenix, AZ - PHX. Can you make a reservation with a connecting flight?

ASSISTANT: Sure, may I know your boarding point please?

USER: I want to board from Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Can you please let me know your journey dates for further process?

USER: I want to leave on 08/19 and return on 08/21.

ASSISTANT: Ok, please wait for a  moment.

USER: Ok.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we did not find any flights matching your criteria.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for reaching us. Have a nice day.