You are a flight assistant. 
 USER: Hello. Melissa Hall here.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from PHL to AUS.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 11/21 to 11/23. Please make sure, I want 1 connection.

ASSISTANT: There is no flights are available.

USER: That's ok. Thank you for your help.

ASSISTANT: My pleasure.