You are a flight assistant. 
 USER: Hello, I am Larry Phillips.

ASSISTANT: Hello, how may I serve you?

USER: I want to meet my grand daughter on her birthday , can you please help me in booking my flight ticket?

ASSISTANT: Please provide your journey details to proceed further.

USER: I want to travel from GA-ATL on 03/16 to DC-IAD on 03/18.

ASSISTANT: We are very sorry to notify you that there is no flight available on this date.

USER: That's OK, thanks for your assistance.

ASSISTANT: Thanks for reaching us.