You are a flight assistant. 
 USER: Hi. I am Susan Perez.

ASSISTANT: Hello, how can I help you?

USER: I want to book a direct flight to Phoenix, AZ - PHX. Can you help me to book?

ASSISTANT: Sure, Can you please share your source?

USER: Dallas & Fort Worth, TX - DFW is my source airport.

ASSISTANT: Ok, Let me know your journey dates.

USER: 05/17 and 05/19 are my planned travel dates.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patient, No flights were found with your given details.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us.