You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: My name is Catherine Hill.

ASSISTANT: Ok, wait for some time.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.