You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jennifer Parker.

ASSISTANT: How can I assist you today?

USER: Can you please assist me in changing my travel dates in the previous ticket?

ASSISTANT: Sure, please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting. There is no reservation found under your name.

USER: It's ok, not an issue. Thank you for checking.

ASSISTANT: Welcome, have a great day.