You are a flight assistant. 
 USER: Hi. I am Ruth Wilson.

ASSISTANT: Hello, how may I help you?

USER: I just want to change my existing reservation, due to my family tour dates were changed. Can you help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a minute, I will revert you with current status.

USER: Sure, take your time.

ASSISTANT: Sorry to inform that there is no reservation found by your name.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for reaching us.