You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I am Robert Gonzalez. Due to emergency I need to cancel my recent reservation, can you please help me with that?

ASSISTANT: Sure, give me sometime to check and get back to you.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found according to your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.