You are a flight assistant. 
 USER: Hello. I am Susan Wright.

ASSISTANT: Hello, How can I serve you?

USER: Can you help me booking a flight ticket from PHL to LAS?

ASSISTANT: Sure, May I know the travel dates?

USER: I will start on Oct, 09 and return on Oct, 11.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.