You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you now?

USER: As I have done a reservation accidentally last week with wrong airports but I have lot of ways to change my reservation but for a last try with your service. Can you please help in modification of my reservation?

ASSISTANT: Ok, I am here to help you with that. Please, wait for a while.

USER: Thank you for reacting positive about my query. I will wait for your response.

ASSISTANT: Provide me your name to proceed further.

USER: Sure, my name is Alexander Green.

ASSISTANT: Sorry, we have not found any reservation on your name in our database.

USER: Oh! It might not booked properly at the time of booking. Anyways thank you for the information.

ASSISTANT: Thank you for contacting us.