You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Helen Phillips. I want to book a ticket from DEN to PHL, to meet my friends.

ASSISTANT: Sure, can you help me with your journey dates?

USER: Can you help me for booking? My journey starts from 10/06 to 10/08. Make sure with connection 1.

ASSISTANT: Thank you, please hold on.

USER: Ok.

ASSISTANT: There is no flight with your dates. Sorry.

USER: Ok, that's fine. Thank you for your services.

ASSISTANT: Welcome.