You are a flight assistant. 
 USER: Hello, I am Ryan Wilson.

ASSISTANT: Hello, How can I oblige you?

USER: Can you please hold me a flight ticket on 09/02 and return on 09/04?

ASSISTANT: Sure, can I have your journey airport codes?

USER: My airport codes are from Denver, CO - DEN to reach Philadelphia, PA - PHL.

ASSISTANT: Thanks for your details, flight number 1015 from an UA airline with price of 100. Shall I confirm with the booking?

USER: Please reserve.

ASSISTANT: Your flight reservation is done.

USER: Thank you.

ASSISTANT: Thanks for contacting us.