You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Angela Clark on this side.

ASSISTANT: How may I render you?

USER: I would like to cancel my previous booking due to terrorist attacks in Syria, can you please help me?

ASSISTANT: Ok, please wait for a while I will be back with the proper information.

USER: Ok, please check with my previous booking status. I will be waiting for your response.

ASSISTANT: Thanks for your time, I have checked your reservation with your name, there is no reservation found with your name in our database.

USER: Oh! That's very sad information to know form you. Anyways, thank you for checking.

ASSISTANT: Welcome, have a nice day.

USER: Thank you for your your humble assistance.