You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from PHL to DCA, can you please help me out?

ASSISTANT: Ok, may I know your journey dates?

USER: I am travelling on these dates Aug 5th and 7th.

ASSISTANT: May I know your connection preference?

USER: I need single connected flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer return in the morning.

ASSISTANT: May I know your name?

USER: Shirley Martin here.

ASSISTANT: I am so sorry to tell you, there are no flights available for your journey.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us Shirley Martin.