You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening.

USER: Good Evening.

ASSISTANT: What kind of help are you expecting from my side?

USER: Please see if there is any possibility to change my dates of travel as I'm unable to take flight on my reserved dates due to a medical emergency.

ASSISTANT: Sure, can I know the name on which the reservation is made?

USER: The ticket was booked with my name which is Edward Hall.

ASSISTANT: Sure, please hold on for a moment.

USER: Ok, take your time.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: That's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your response.