You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I just want to change my existing reservation, due to sudden demise of my grand mother. Can you help me out?

ASSISTANT: Sure, please provide your name to change the reservation?

USER: Ok, my name is Ruth Thompson.

ASSISTANT: Ok, please be on hold.

USER: OK.

ASSISTANT: Sorry, we did not found any reservation on your name.

USER: Ok, no problem at all.

ASSISTANT: Thank you for reaching us.

USER: Thanks a lot for the information..