You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best aid you today?

USER: I am Andrew Harris. Can you please book me a ticket with the fare of 500?

ASSISTANT: Sure, May I know from where you are flying from and landing at?

USER: I would like to fly from PHL to LAS.

ASSISTANT: Ok, Do you like to go with a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: Can you please forward your journey dates?

USER: My travel dates are from 09/26 and 09/28.

ASSISTANT: Please wait for sometime.

USER: OK.

ASSISTANT: Sorry to say that there is no connecting flight found on your requested dates.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thanks for opting us, have a great day.