You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amy Young.

ASSISTANT: How can I assist you today?

USER: I had planned to go on a trip with my friends, but it was postponed. I was looking for change in my recent reservation. Can you help me?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check for the previous reservation in our data base.

USER: Yes, take your time.

ASSISTANT: Your patience is greatly appreciated. Amy, there is no reservation found under your name.

USER: That's not a problem. Anyways, thank you for your help.

ASSISTANT: You are welcome. Thank you for contacting us.