You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Yes, can you share me your name?

USER: I am Linda Mitchell.

ASSISTANT: I have found reservation on your name. Can you tell me your new dates of travel?

USER: My trip dates will be Mar 6th to Mar 8th.

ASSISTANT: Can you share me your nearest airport codes?

USER: My airport codes will be MSP to LGA.

ASSISTANT: Do you have any other preferences?

USER: I prefer a business class flight.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Its ok, thank you.

ASSISTANT: Can I know your name?

USER: I already mentioned.

ASSISTANT: Thank you for reaching us.