You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Turner.

ASSISTANT: Betty, how can I assist you?

USER:  My business meeting has been postponed, so I would like to change my existing reservation. Can you help me?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Ok, take your own time.

ASSISTANT: Sorry, no reservation found by your name.

USER: That's fine, no problem. Thank you for checking.

ASSISTANT: Thank you for contacting us.