You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jason Turner.

ASSISTANT: How can I assist you?

USER: I have planned a trip with my friends, but my travel dates have been postponed. Can you help me in changing the reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I will check it. I am sorry to say that there is no reservation found, as per your name.

USER: It's fine.

ASSISTANT: Thank you for providing me with your details.

USER: Thank you for your immediate response.

ASSISTANT: Welcome.