You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from PHX to ATL, can you help me?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travel dates are 01/13 and 01/15.

ASSISTANT: May I know your name please?

USER: Myself Donald Clark.

ASSISTANT: Sorry Clark, there is no flights in your request.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for reaching us.