You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me out in changing my recent reservation? As I have an important meeting to attend on my trip dates.

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is Rachel Miller.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry Miller, there is no reservation found under your name.

USER: Oh! May be I have done a wrong booking, I'll recheck it once and get back to you. Thank you anyways.

ASSISTANT: It's my pleasure.