You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I render you today?

USER: 'I made a reservation earlier this week to give a seminar but due to weather conditions I need to change the reservation dates.

ASSISTANT: Ok.

USER: Could you help me in changing me the reservation?

ASSISTANT: Sure, May I have your name?

USER: Thank you. Reservation is done with my name Sarah Parker.

ASSISTANT: Thanks for providing your name.

USER: Ok.

ASSISTANT: No reservation was found on your name to proceed further.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.