You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Dorothy Hill here, I want to book a ticket from OAK to PHX.

ASSISTANT: Please tell your travelling dates.

USER: Ok, I will be travelling on 08/06 and 08/08.

ASSISTANT: Sorry, there are no flights with your regarding details.

USER: It's ok, no issues. Thanks for checking.

ASSISTANT: Thank you and have a nice day.