You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Amy Clark here. I want to book a flight on the route from DCA to PHX, can you help me?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates will be from 07/13 to 07/15. Please check for a direct flight for my journey.

ASSISTANT: I am sorry no flights found on your request.

USER: Ok, thank you for checking. No issues with it.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.