You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help are you seeking from our agency side?

USER: I have planned a trip to Seattle but due to financial problems I am unable to travel Seattle and the program has shifted to Boston location, so can you please assist me with flight ticket changing process?

ASSISTANT: Ok, I am here to help you with changing your reservation. May I know your name to check with your previous booking?

USER: Thank you so much for accepting my request in positive manner and I have reserved my previous flight ticket on my name Mary Garcia.

ASSISTANT: Can you please be on hold for a while till I check with the availability?

USER: Sure, I can wait for your response. Take your own time.

ASSISTANT: Mary Garcia, I couldn't find any reservation by your name in our database. Thank you for choosing our services.

USER: I can understand and no issues with that. Thank you for your immediate response and providing the information.

ASSISTANT: Have a nice day ahead.