You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Laura Roberts.

ASSISTANT: How can I be of your assistance today?

USER: As I am suddenly fallen sick due to bad weather I would like to change my recent reservation. Can you help me with changing reservation?

ASSISTANT: Sure, I am here to aid you. Please give me a minute, I will check the data base and revert you back.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation done earlier with your name to change.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for availing us.