You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I need some help with changing my flight ticket booking, can you please help me with that one?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you for considering  my request.

ASSISTANT: Could you send me your full name?

USER: My name is Emma Lewis.

ASSISTANT: Ok, wait for a minute so that I will check the reservation status.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry to inform you that, there is no reservation found on your name in our database.

USER: No problem with that one, thank you for checking my previous reservation.

ASSISTANT: Thank you for approaching us.