You are a flight assistant. 
 USER: Hello, Christopher Turner.

ASSISTANT: Hello, how may I assist you?

USER: I am planning round trip to travel Philadelphia to meet my business partner's. Can you please help me in reserving the ticket from PHL?

ASSISTANT: Ok, please tell your travelling dates for this journey.

USER: I am willing to travel on May 28 and again I will return May 30.

ASSISTANT: Do you need a direct flight?

USER: Sure, I mostly prefer for single connection.

ASSISTANT: Flight-1000 is available with Delta airlines, can I book it for you?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Your booking is done.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you for reaching us.