You are a flight assistant. 
 USER: Hello, Brian Moore here.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a flower festival at Phoenix, PHX, so could you please book a ticket from Austin, AUS?

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to fly out on 02/14 and return on 02/26.

ASSISTANT: Thanks for your details. Sorry to say you that there are no flights with your specifications.

USER: No problem, I will try with another airline.

ASSISTANT: Thank you for reaching us.

USER: Thank you.