You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please check with my previous booking and help me with changing my journey dates?

ASSISTANT: Sure, may I know your name please?

USER: I am Pamela Allen.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: There is a reservation found on your name, can you please share your recent airport codes please?

USER: I will travel from LAX to LAS.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My journey dates are from Sept 4 to Sept 6.

ASSISTANT: Please mention your requirements?

USER: I need 1 connection flight.

ASSISTANT: Sorry Allen, there is no flight found as per your travelling dates.

USER: Oh! That's fine. Thank you for checking anyways.

ASSISTANT: Thank you for reaching us with a query.

USER: Most welcome.