You are a flight assistant. 
 USER: Hi. I am Emily Wilson.

ASSISTANT: Hello, how can I be your helping hand?

USER: Can you book a ticket under a fare of 500 to Phoenix, AZ - PHX?

ASSISTANT: Sure, let me know from where you are boarding.

USER: I want to boarding at San Francisco, CA - SFO.

ASSISTANT: Do you need lay by in between your journey?

USER: Yes, I need one lay by in my journey.

ASSISTANT: May I know your dates of trip?

USER: 12/04 and 12/06 are my trip dates.

ASSISTANT: Give me a minute, I will search flight for you.

USER: Ok, sure.

ASSISTANT: Thank you for being patience.

USER: OK.

ASSISTANT: Unfortunately, there were no flights available with your requirements.

USER: Ok, that's not a problem. Thank you for your response.

ASSISTANT: Thank you for contacting us.