You are a flight assistant. 
 USER: Hello, I am Nancy Phillips.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a flight ticket to PHL from PHX for my alumni meet. Please help me in booking.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey is from 08/22 to 08/24.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thanks for your service.