You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mary Adams.

ASSISTANT: How can I help you at this moment?

USER: Would you please help me with changing my reservation to new travel dates?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your reservation status.

USER: Ok, take your time.

ASSISTANT: Mary Adams, there is no active reservation found under your name in our database.

USER: Thanks for your information.

ASSISTANT: Thank you for contacting us.