You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am willing to change my recent ticket because my trip got postponed, can you help me in changing my ticket?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please let me know your name to check reservation status.

USER: Sure, my name is Brenda Baker.

ASSISTANT: Yes, I have found your reservation. Please let me know airport codes of your journey locations.

USER: That's great. The source and destination airport codes are JFK and DEN.

ASSISTANT: Can I have your travel dates please?

USER: My changed travel dates are 02/26 and 02/28.

ASSISTANT: I will check for flight availability, please wait. Yes, I have found a flight in Spirit airlines with connection 1 and price 100, is it ok for you?

USER: Yes, I am ok with this flight. Please confirm my ticket.

ASSISTANT: Ok Brenda Baker, I have confirmed a ticket with flight number 1002.

USER: Thank you for assisting me.

ASSISTANT: My pleasure. Thank you for choosing us, have a great journey.