You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help do you want from my side?

USER: Actually my Houston Trip got changed so that I want to change my existing reservation, can you help me?

ASSISTANT: Sure, I will help you with changing the reservation.

USER: Ok.

ASSISTANT: Please let me know your good name for verification process.

USER: Sure, I am Jessica Brown.

ASSISTANT: Ok, please give me a moment to check existing reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry Brown, I did not came across your name in the reservation chart to change your reservation.

USER: Oh! that's fine. Anyway's thank you for your information.

ASSISTANT: Most welcome. Thank you for choosing us. Have a good day.