You are a flight assistant. 
 USER: Hi, I am Barbara Roberts.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit cathedral basilica of saint peter and Paul in Philadelphia, PHL. Can you help me to book a flight with one halt?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can I know your source point?

USER: My source is from Austin, AUS.

ASSISTANT: Please let me know your travel dates.

USER: My travel dates are Nov 05 and Nov 07.

ASSISTANT: There is no flights available on your given travel dates.

USER: Ok, no issues. Thank you for sharing the information.

ASSISTANT: Thank you for contacting us.