You are a flight assistant. 
 USER: Hi, I am Scott Thompson.

ASSISTANT: Hello, how can I help you?

USER: I would like to celebrate my grand father's birthday in Boston, could you help me in booking me a connecting flight within 5000.

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

USER: My journey is from 09/30 to 10/02.

ASSISTANT: May I know your airport codes please?

USER: I would like to fly from PHX to BOS.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to say that we have not found any flights with your given details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your information.