You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning.

USER: Sandra Baker here.

ASSISTANT: Welcome to flight booking agency, which service you would like to have from my end?

USER: Yes, I am willing to change my reservation because I have done booking last week with wrong destination location. Can you please help me to change my reservation?

ASSISTANT: Sure, I am here to help you with that. Please give me a moment to check your recent reservation details in my records.

USER: Thank you for considering my query. Yes, I will wait for your response.

ASSISTANT: Thank you for waiting. Sorry to say, there is no reservation found on your name in my database.

USER: It might not be booked correctly at the time of reservation. Anyway thank you for the information.

ASSISTANT: Thank you for choosing us, hope we will get an opportunity to serve you in future.

USER: Sure, thank you.

ASSISTANT: You are welcome.