You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I have reserved flight ticket wrong dates so I want to re-modify my travel dates, can you please help me in that?

ASSISTANT: Sure, may I know your name?

USER: Betty Jackson.

ASSISTANT: Please wait a moment I will the reservation and get back to you.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no wary in that. Thank you.

ASSISTANT: Thanks for reaching us.