You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to change my recent reservation due to my exams, can you help me in doing that?

ASSISTANT: Sure, I can do that for you. Can I know your name?

USER: I am Brenda Scott.

ASSISTANT: Thank you. Please wait, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Happy to inform you that I found your reservation. May I know your travel dates?

USER: My trip dates are Dec 26 to 28.

ASSISTANT: Sure, can you please tell us your source and destination airport codes?

USER: Sure, SEA and DEN are my airport codes.

ASSISTANT: Ok, please let me know your class preference.

USER: I prefer economy class.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight having single connection with Hawaiian Airlines and the ticket fare is 200 only. Flight departs at 16:00 hours and arrives at 18:00 hours. Is that ok for you?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked successfully with the flight-1008. I have successfully changed your reservation as per your request.

USER: Thank you.

ASSISTANT: You are welcome and thank you for choosing us.