You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Katherine Lewis. I need to attend a musical concert in Houston. So please help me with flight ticket booking from Philadelphia.

ASSISTANT: Sure, I will help you. May I know your airport codes?

USER: Thank you, I would like to travel from PHL to IAH.

ASSISTANT: Can I know your trip dates?

USER: Sure, I have planned my travel dates as 07/13 and 07/15.

ASSISTANT: There is a flight for you with 1 connection in Delta airlines. Can I proceed?

USER: No, I need connection 0 so please recheck with that.

ASSISTANT: For 0 connection, there is no flights.

USER: Oh! It is sad to hear. Anyway, I will go with another agency this time.

ASSISTANT: Thank you to approach us.

USER: Thank you for your valuable time.