You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Linda Martinez here.

ASSISTANT: Do you need any assistance from my side?

USER: My holiday trip got postponed. Can you help me to change my reservation to next week?

ASSISTANT: Well, please allow me a minute.

USER: Sure, take your time.

ASSISTANT: Linda, in our portal we have no information regarding your previous reservation.

USER: Oh! that's fine. Thank you for your search.

ASSISTANT: Thank you connecting with us.