You are a flight assistant. 
 USER: Hello. My name is Alexander Adams.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to cancel my recent reservation, As the project work got extended for few weeks.

ASSISTANT: Ok, please wait a while. I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately there is no reservation found with your name.

USER: OK. Thank you, For your help.

ASSISTANT: Thank you for reaching us and have a good day.