You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a flight ticket from SFO, can you please assist me in making a plane reservation to PHX?

ASSISTANT: Sure, may I know your good name?

USER: My name is Susan Johnson.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I will prefer to travel in direct flight.

ASSISTANT: Could you please help me with your journey dates?

USER: My journey dates are Feb 22nd and Feb 24th.

ASSISTANT: Are there any more specifications?

USER: I will prefer to travel in normal-cost airline. I would like to travel in an economy class.

ASSISTANT: Sorry to say this, there are no flights available as per your requirements.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.