You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: Due to some emergency issues, I would like to change my reservation. Will you please help me?

ASSISTANT: Sure, I am glad to help you to change your existing reservation.

USER: Thank you.

ASSISTANT: Can I have your good name, to check with the previous reservation?

USER: Sure, you can check the reservation on the name of Samantha Phillips.

ASSISTANT: Thanks for providing your name, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to change it.

USER: No worries, thank you.

ASSISTANT: Thank you for availing us.