You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: As my shooting got rescheduled, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, I am here to help you with that. Can you help me with your name to check the reservation status?

USER: Sure, my name is Elizabeth Walker.

ASSISTANT: Ok, please wait a moment I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say, I did not found any reservation under your name.

USER: Not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.