You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. Can you help me?

ASSISTANT: Sure, we are here to help you. Please hold a moment, let me check your reservation and let you know. Can I have your name?

USER: Ok. Rachel Lewis here.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your valuable time, sorry, no reservation found with provided name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.