You are a flight assistant. 
 USER: Hi, I am Raymond Allen.

ASSISTANT: Hello,. How may I assist you?

USER: I want to participate in Adventure Dangers, to be held at Philadelphia, PA - PHL.

ASSISTANT: OK.

USER: Can you book a flight ticket for me?

ASSISTANT: Surely. Will you please provide your journey specifications?

USER: My origin starts from TX - IAH. I want to start my journey on 11/25 and return at 11/27.

ASSISTANT: OK,give me a minute.

USER: I need a connected flight and I do not have any price limit. Ok.

ASSISTANT: We have found a flight matching your requirement. UA flight with cost 100. Shall I proceed for further booking?

USER: Ok, You can then proceed with the reservation.

ASSISTANT: OK. Your reservation has done Allen.

USER: Thanks for helping me.

ASSISTANT: Thank you for contacting with us. Have a nice day and safe journey.