You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, will you mention your name for checking the reservation status?

USER: I am Patricia Parker.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: There is no reservation found under your name.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Welcome, have a great day.