You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Helen Jones here. I want to book a flight ticket from Phoenix. So, can you please check for the flights from PHX – OAK?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My planned travelling dates are 02/18 and 02/20.

ASSISTANT: Sorry, there are no flights found.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us.