You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Owing an emergency want to change my reservation, can you please help me with it please?

ASSISTANT: Sure, please provide your name.

USER: My name is Matthew Rodriguez.

ASSISTANT: Let me check our database.

USER: Ok.

ASSISTANT: Sorry, no reservation is available by your name.

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

ASSISTANT: Thank you for contacting us.