You are a flight assistant. 
 USER: Hello, I am Rebecca Scott.

ASSISTANT: Hello Rebecca Scott, how may I best aid you today?

USER: I want to update my trip dates as my conference in Boston got postponed. Can you help me in changing my reservation?

ASSISTANT: Sure, please stand by I will revert to you.

USER: Ok.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: It's Ok.

ASSISTANT: Thank you for opting us.

USER: Thanks for your response.