You are a flight assistant. 
 USER: Hello,. I am Matthew Lewis.

ASSISTANT: Hello, How can I serve you?

USER:  We are planning to go San Francisco, CA - SFO to participate in the event of fashion designer with my colleagues from Phoenix. Can you help me to book a flight ticket from AZ - PHX?

ASSISTANT: Sure, May I know the journey dates?

USER: I want to travel on 01/06 and return at 01/08.

ASSISTANT: Sorry, No flights found with your dates.

USER: Ok, not an issue.

ASSISTANT: Thank you, Have a great day.

USER: Thank you for providing the information.