You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to cancel my reservation, because suddenly my interview got postponed due to heavy rains in my travel location, can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I will definitely help you with that.

USER: Thank you.

ASSISTANT: Will you provide your name for checking for reservation?

USER: Sure, please check under the name of Dennis Carter.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting.

USER: No problem.

ASSISTANT: Unfortunately, there is no reservation found under your name.

USER: Oh, I think my cousin cancelled my reservation.

ASSISTANT: Would you like to ask anything else?

USER: Nothing, thank you for the information.

ASSISTANT: It's my pleasure, have a great day.

USER: Welcome.