You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to change my reservation to next week?

ASSISTANT: Sure, I am here to help you for this. May I know your name please?

USER: Sure, my name is James Adams.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name.

USER: No issues, thank you for your time.

ASSISTANT: Thank you very much for contacting our agency.