You are a flight assistant. 
 USER: Hello, William Collins here.

ASSISTANT: Hello, how can I aid you?

USER: I planned to attend for a seminar in BOS, can you help me to book a ticket from PHL?

ASSISTANT: Sure, I will check with it, can I know on which dates you want to be your tickets to be booked?

USER: I would like to travel on 01/07 and 01/09.

ASSISTANT: Ok, give me a moment.

USER: Sure.

ASSISTANT: Happy to inform you that there is an available flight-1009 for you from Delta airline and fare is only 100.Are you fine with that?

USER: Ok, please book the ticket for me.

ASSISTANT:  I have confirmed your ticket successfully.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.