You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what type of service you are looking for?

USER: I am George Thomas, can you help me in changing my reservation?

ASSISTANT: Sure, I will help you.

USER: Because my exam got postponed to next month.

ASSISTANT: George, I don't find any reservation on your name in our listing.

USER: That's fine, I will check with other agency.

ASSISTANT: Do you have any other requirements?

USER: No. Thank you for your quick response.

ASSISTANT: Ok, fine. Thank you for contacting our service. Hope you have a great day.