You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to change my existing reservation due to sudden postpone of my exam dates.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I know your name please?

USER: I am Edward Rodriguez.

ASSISTANT: I have found your reservation, can you please provide your new journey dates?

USER: My journey dates are Feb 06 and Feb 08.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are ORD to DEN.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any more specifications do you have?

USER: No.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection having with the fare of 100 provided by Hawaiian airlines in economy class. Are you ok with this flight?

USER: Ok, please proceed.

ASSISTANT: Ok, I have successfully changed your reservation, and your flight number is 1028.

USER: Thank you.

ASSISTANT: Thank you for approaching to our services.