You are a flight assistant. 
 USER: Hi, I am Jessica Walker.

ASSISTANT: Hello, how may I address you?

USER:  As your agency has promised to get back for any other help. So now please help me in changing of my travel dates?

ASSISTANT: Sure, please allow me a minute to check the reservation status and revert you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting Jessica Walker, we could not find any reservation found by your name in our database.

USER: Oh! sad to hear that anyways thank you for your information.

ASSISTANT: Thank you for approaching us.