You are a flight assistant. 
 USER: Hello, This is Steven Lee.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to go for an adventures tour to Dallas  Fort Worth, TX - DFW. Please assist me in booking a flight?

ASSISTANT: Sure, I am here to help you. May I know your source code please?

USER: Yes, my source code is Philadelphia, PA - PHL.

ASSISTANT: When you are willing to travel?

USER: I am willing to travel from 05/07 to 05/09.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we found direct flight with fare of 200. Shall I proceed to book?

USER: Please do not proceed with that.

ASSISTANT: Ok.

USER: Thank you for your time.

ASSISTANT: Thank you for reaching us.