You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your source point?

USER: Sure, my source is at PHX.

ASSISTANT: May I know on which dates you prefer to travel?

USER: My preferred dates of travel are from 10/21 to 10/23.

ASSISTANT: Do you prefer any flag stop in between journey?

USER: Yes, I need a flag stop.

ASSISTANT: May I know your name please?

USER: I am Robert Garcia.

ASSISTANT: Ok, please wait for few minutes.

USER: Ok.

ASSISTANT: We found a Frontier airlines with connecting flight, and the fare is 100. Shall I proceed your booking with 1015 flight number?

USER: You can go head with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us, have a safe journey.