You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I need to change my recent reservation, can you help?

ASSISTANT: Sure, will you please let me know your name?

USER: Myself Matthew Evans.

ASSISTANT: Ok, please allow me few minutes to check the reservation list and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name in our data base.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for picking us.