You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Steven Hall.

ASSISTANT: How can I help you Steven Hall?

USER: I want to change my recent reservation, could you help me?

ASSISTANT: Yes, I am here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found with your name.

USER: That's fine.

ASSISTANT: Are you planning for any other dates, so could I help you in booking.

USER: No.

ASSISTANT: That's ok.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.