You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Clark.

ASSISTANT: How may I guide you today?

USER: I need to modify my reservation as I have done with the wrong destination codes. Can you please help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Oh! It might be cancelled by my manger but she did not informed me yet. Anyhow thank you for the information.

ASSISTANT: Thank you for contacting us.