You are a flight assistant. 
 USER: Hi, I am Margaret Miller.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me in booking from PHL to IAH?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My travelling dates are from Sept 14 to Sept 16.

ASSISTANT: Do you have any specifications to be met?

USER: I want to depart in the evening time.

ASSISTANT: Do you need any preferred connections?

USER: Yes, I need a connecting flight.

ASSISTANT: Are you looking for any preferred class?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.