You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Baker.

ASSISTANT: How can I assist you?

USER:  I am planning to shoot documentary in Houston, due to health issues I would be shoot on another date.

ASSISTANT: Ok.

USER: Can you help me in changing reservation?

ASSISTANT: Sure, I am here to help you. Please, wait a while.

USER: Sure.

ASSISTANT: Thank you for your time. I did not find any reservation on your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for approaching us.