You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you today?

USER: I am planning to book a ticket to meet my friend at PHL. Can you please help me out to book a ticket from IAD?

ASSISTANT: Sure, I will help you in making an airline reservation. May I know when you are planning to depart and arrive?

USER: I would like to travel on Sept 30 and return back on Oct 02.

ASSISTANT: Kindly mention your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Can I know your good name please for further process?

USER: My name is George Martin.

ASSISTANT: Please give me a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found with your provided information.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.