You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Carolyn Edwards from Chicago. I would like to change my recent reservation, can you help me to change that reservation?

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

USER: Sure, take your own time to check the reservation details.

ASSISTANT: Sorry, no reservation is available by your name.

USER: That's fine, not a issue, anyways thanks for your information.

ASSISTANT: Thank you for contacting us.