You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donald Allen.

ASSISTANT: How can I help you?

USER: Can you help me for cancelling my recent reservation, because I am unable to travel at this moment?

ASSISTANT: Sure, please wait for a while to check your reservation status.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: Oh! It's ok, no problem thank you for your services.

ASSISTANT: Thank you and have a nice day.