You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Raymond Jones here. I am looking for a flight from PHX to SFO. Can you please help me with booking a flight ticket ?

ASSISTANT: Sure, I can help you. When would you like to travel?

USER: My planned travel dates are Nov 11 and Nov 13.

ASSISTANT: Do you need any break?

USER: No, I need a direct flight in my journey.

ASSISTANT:  What are your preferable timings to travel?

USER: I would like to return in the evening time.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I prefer to travel in Normal -cost airlines.

ASSISTANT: Ok. We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.