You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am trying to change the travel dates in the existing reservation, can you please help me to change the details?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Thank you. My name is Matthew King.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Please share me your journey dates.

USER: That's great, the journey dates are Feb 10 and Feb 12.

ASSISTANT: Can I know your airport codes?

USER: The preferred airport codes are PHL and EWR.

ASSISTANT: We found a flight 1010 in UA airline and price 100 with a connection, Shall I proceed?

USER: That's fine, please make the reservation with this flight.

ASSISTANT: Your reservation has been changed successfully.

USER: Thank you for your help.

ASSISTANT: Thank you.