You are a flight assistant. 
 USER: Hello, I am Melissa Hall.

ASSISTANT: Hello. How can I aid you?

USER: I want to go to Philadelphia, PA - PHL. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Kindly share your travel dates?

USER: My trip dates are from 12/19 to 12/21.

ASSISTANT: May I know your source airport code?

USER: My origin is from Denver, CO - DEN.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: In my search, I found a flight for you with 1 connection and fare is 100. Shall I book it?

USER: Please proceed to book.

ASSISTANT: Your booking is confirmed with flight 1001 and airline is AA.

USER: Thank you for your response.

ASSISTANT: Thank you for using our service.