You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to go for a vacation at PA-PHL, can you please book a ticket from TX-AUS?

ASSISTANT: Sure, when do you planned your journey?

USER: My planned dates are from 08/15 to 08/17.

ASSISTANT: Do you need any connection?

USER: I need a connecting flight.

ASSISTANT: Thanks for sharing your information. Unfortunately there are no flights found with your requirements.

USER: Ok, no issue. Thank you.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Kevin Walker.

ASSISTANT: Thank you for connecting with us.