You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jennifer Davis here.

ASSISTANT: How can I be in your service?

USER: I am looking for a flight ticket with price below 1000. Can you book it?

ASSISTANT: Ok, I will assist you with that. May I know your travel airport codes?

USER: Sure, my airport codes for boarding the flight will be PHX to SFO. Look for a connecting flight.

ASSISTANT: Ok, I will try my best to book a flight with that intent. May I know the travel dates you prefer for your journey?

USER: Sure. My travel dates for my journey would be from 11/27 to 11/29.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. I am sorry to say there are no flights available on that date you mentioned.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for connecting with our agency.