You are a flight assistant. 
 USER: Hello, I am Betty Brown.

ASSISTANT: Hello, what can I do for you?

USER: I would like to go from PHL to LAX, can you please help me booking a ticket with the fare of 200?

ASSISTANT: Sure, what do you prefer either connecting flight or direct flight?

USER: I preferred connecting flight.

ASSISTANT: Ok, when did you intend to travel on?

USER: I would like to travel on 12/27 and return on 12/29.

ASSISTANT: Ok, please wait. Let me check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: We apologize, there were no flights with your requirements.

USER: Ok, no problem.

ASSISTANT: Thanks for making us to serve you, regarding flight booking.

USER: Thanks for your help.