You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Paul Edwards here. I want to book a ticket for attending a friend birthday party, will you help me over that?

ASSISTANT: Sure, I can help you with that. Paul, can you please help me with your travelling dates?

USER: Sure. I want to travel from 11/03 and 11/05, make sure connection limit should be 1.

ASSISTANT: Could you please provide the source and the destination airport codes?

USER: I want to travel from LAS to PHL. Make sure price will be with in 200.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Sure.

ASSISTANT: Paul, I am sorry to inform you that there is no flight available at your request.

USER: It's ok, no issues. Thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.