You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I have a plan to surprise my parents on their wedding anniversary by  arranginging a surprise party at Denver, DEN. Can you be my helping hand in making a reservation?

ASSISTANT: Sure, can you help me with your travelling dates please?

USER: My journey dates are from 01/25 to 01/27.

ASSISTANT: Ok, please let me know the departing airport codes please?

USER: My origin airport code is EWR.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights with your requested dates.

USER: Ok, no problem.

ASSISTANT: Can i have your name please?

USER: I am Michelle Hall.

ASSISTANT: Ok, thank you for choosing us.

USER: Thanks for the response.