You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit historic symbol of America Liberty Bell at PHL, can you help me with booking?

ASSISTANT: Sure, we are happy to help you. Kindly mention your source point.

USER: My source is at MA-BOS.

ASSISTANT: Ok, May I know your depart date and return date as scheduled?

USER: I would like to depart on 12/26 and need to return on 12/28.

ASSISTANT: Ok, May I know your good name?

USER: I am Robert Rodriguez.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a connecting flight in 1020 Delta airline with a fare of 100. Can I proceed for booking in economy class?

USER: You can proceed.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.