You are a flight assistant. 
 USER: Hi, I am Carol Brown.

ASSISTANT: Hello, how may I help you?

USER: I want to go for an Yosemite adventure at PHX, can you please book me a ticket from SFO?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are from Dec 30th to Jan 1st.

ASSISTANT: Do you have any price limit?

USER: Yes, I want a ticket under price of 1000.

ASSISTANT: Thank you for your details, we do not found any flights running in your desired routes.

USER: Ok, no issues. Thank you for giving the information.

ASSISTANT: Thank you for reaching us.