You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am looking to change my travel dates in the previous reservation. Can you please aid me to do that?

ASSISTANT: Ok, I am glad to help you with that.

USER: Thanks a lot for your response.

ASSISTANT: Can I know your good name?

USER: My name is Anna Baker.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name in our database.

USER: It's ok, not an issue with that. Thank you for checking my ticket status and providing the information.

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