You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Phillips.

ASSISTANT: How may I help you?

USER: I am planning to attend music concert at SEA, can you please help me with booking a flight ticket from PHL?

ASSISTANT: Sure, I will help you. Can I have your planned journey dates?

USER: Sure, I would like to take off on Oct 7 and return on Oct 9.

ASSISTANT: Let me know your fare limit.

USER: I am looking for a flight with price limit 500.

ASSISTANT: Thank you for sharing the details, wait a minute.

USER: I need a direct flight.

ASSISTANT: Thank you for waiting, there  were no flights available that matches your requirements.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.