You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Scott Miller.

ASSISTANT: How may I lend a hand to?

USER: I want to meet my sister as she is unwell, can you please help me to book my flight ticket from PHL to AUS?

ASSISTANT: Scott, I am willing to help you for this. When you are planning to boarding?

USER: Sure, I will depart on 04/27 and return on 04/29.

ASSISTANT: Just a moment.

USER: Sure.

ASSISTANT: Scott sorry to intimate, no flights are available with your criteria.

USER: No problem. Anyway, thank you for checking.

ASSISTANT: Thank you Scott for utilizing our agency.