You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to change my travel dates in my reservation so can you please help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for your response.

ASSISTANT: Can you please share your name to proceed further?

USER: Sure, my name is Christine Walker.

ASSISTANT: Please wait for a minute.

USER: Ok.

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

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.