You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christopher Walker.

ASSISTANT: How may I aid you today?

USER: Due to bad weather conditions at my destination point, I need to cancel my recent reservation. Will you help me with that?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please wait a while,  let me check the reservation list and I will get back to you with the status.

USER: Ok, I will wait.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: We are regret to say that there is no reservation found with your given name in the data base.

USER: Not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.