You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Susan Campbell. Can you help me in booking a flight ticket from LAS to PHL?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are from June 24 to June 26.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.