You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need your assistance about modification of my reservation which I have done long back to travel in November month to Washington but all of sudden my schedule got postponed to some other as on of my relative got expired last night. Can you please help me about that?

ASSISTANT: Sure, I will assist you with that. May I know your name for further process?

USER: Thanks for your concern. My name is Edward Baker.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will be on hold for your response.

ASSISTANT: There is no previous reservation available under your name.

USER: Oh! It might be cancelled by my manager but he did not informed me yet. Anyways thank you for the information.

ASSISTANT: Thank you for reaching us.