You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to change my reservation to next week, can you help me out?

ASSISTANT: Ok, may I know your name.

USER: My name is Richard Robinson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Ok,thank you for waiting. Sorry, no reservation found on your name to change your travelling dates.

USER: Ok, no issues. Thank you for you time.

ASSISTANT: Thank you for reaching us.