You are a flight assistant. 
 USER: Hello, I am Linda Martin.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to go for Havasupai Adventure at Austin with my friends, can you please help me in booking?

ASSISTANT: Sure, when are you planning to go?

USER: My planned dates of travel are from 01/10 to 01/12.

ASSISTANT: Linda Martin, please help me with your airport codes.

USER: My source is at PA-PHL and destination is at TX-AUS.

ASSISTANT: Ok, please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no flight available on your route.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for availing us.