You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rachel Nelson.

ASSISTANT: How can I help you?

USER: I am planning to go for ATL from OAK, can you please help me out?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 04/29 and 05/01.

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

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you.