You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how exactly I can support you the best?

USER: I met with an accident recently.  Owing to this situation, I have been advised to take a week's bed rest. I request you to change my reservation, so that I can take complete bed rest and recover at the earliest possible.

ASSISTANT: Sure, we are pleased to help you.

USER: Thanks.

ASSISTANT: Can I have your full name, please?

USER: My name is Lisa Davis.

ASSISTANT: Let me check the status of your reservation to change, just a moment.

USER: Sure.

ASSISTANT: Thanks for your valuable time. Please apologize for the inconvenience, we have gone through the reservation list but could not find any reservation on your good name to change.

USER: Thank you for your assistance.

ASSISTANT: It's my pleasure to help you. Thank you for availing us.