You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to modify my recent booking that the trip got postponed, can you please change my recent booking?

ASSISTANT: Sure, I will check that.

USER: Thank you.

ASSISTANT: Can you please provide me your good name to check the reservation?

USER: Sure, my name is David Rodriguez.

ASSISTANT: Sorry, no reservation found in our database to change.

USER: It's alright, thank you for your service.

ASSISTANT: Thank you for consulting us.