You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Patricia King. Can you please help me in ticket booking from PHL to LAS?

ASSISTANT: Sure, may I know your dates of journey please?

USER: As my birthday will be on 04/11, I planned my journey dates for 04/10 and 04/12.

ASSISTANT: Sorry Patricia, there is no flight is found as per your travelling details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for consulting us.