You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Allen.

ASSISTANT: How can I help you?

USER: Can you please book a flight ticket from PHX to MSP?

ASSISTANT: Your travelling dates please?

USER: Sure, I need to travel on  dates of 12/01 and 12/03.

ASSISTANT: I am sorry no flights found on your route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.