You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am going to Philadelphia PA-PHL to purchase a vintage car from a dealer. Can you hold me a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will depart on 09/20 and arrival on 09/22.

ASSISTANT: Do you need halt in between journey?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: From where are you going to depart?

USER: My boarding point is Washington DC-DCA.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry to say that, currently there are no flights available to your destination.

USER: That's ok, thank you for your information.

ASSISTANT: May I know your name for documentation propose?

USER: I am Pamela Collins.

ASSISTANT: Ok, thank you for reaching us.