You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Edward Baker. I need to change my reservation as my plan to go for heritage tour got postponed. Can you help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time I will check and get back to you.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's fine, thanks for your response.

ASSISTANT: Thanks for approaching us.