You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for today?

USER: My exam got postponed to next week, can you help me to change my reservation?

ASSISTANT: Sure, could you please provide your name to check the reservation details.

USER: My name is Stephen Adams.

ASSISTANT: Ok, please wait a moment I will check and proceed further.

USER: Sure.

ASSISTANT: Sorry Stephen, there is no reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Thank you for your time.