You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Janet Martinez.

ASSISTANT: How can I assist you today?

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

ASSISTANT: sure, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Janet, no active reservation found under your name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: You are welcome.