You are a flight assistant. 
 USER: Hi, I am Patricia Martinez.

ASSISTANT: Hello, how can I aid you?

USER: I want to meet my friend on his birthday, so I need to book a flight ticket.

ASSISTANT: Sure. Can you provide your journey details?

USER: Sure. My journey starts from Phoenix, AZ-PHX on 11/17 and ends at Minneapolis & St. Paul, MN-MSP on 11/19.

ASSISTANT: Please give minute, I will check the availability and revert back to you.

USER: Ok.

ASSISTANT: Thanks for waiting. Unfortunately, we did not find any flights matching your details. Thanks for contacting us.

USER: Thank you for your service.