You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I want to change my existing reservation due to some technical issues. Can you help me in doing that?

ASSISTANT: Sure, may I know your name please?

USER: I am Kathleen Martinez.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we found a reservation in your name. Can I have your journey details please?

USER: I will fly from JFK my nearest airport to reach DEN. My trip dates are 06/21 to 06/23.

ASSISTANT: We found a flight in an airline Spirit with 1007 number having a single connection price of 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us.