You are a flight assistant. 
 USER: Hi, I am Laura Hall.

ASSISTANT: Hello, How can I aid you?

USER: I want to visit and I want to do shopping for my birthday at a Ferry building market place in San Francisco, CA - SFO. Can you assist me to book a flight under price of 500?

ASSISTANT: Sure, do you need any halt in between your journey?

USER: I am comfortable with any flight.

ASSISTANT: Ok, from which airport you want to board?

USER: I want to board from Charlotte, NC - CLT.

ASSISTANT: Can you please share me your depart and arrival dates of journey?

USER: I want to depart on 11/09 and recur on 11/11.

ASSISTANT: Please hold on, I will check the availability of flights and let you know the flight details.

USER: Sure.

ASSISTANT: Thanks for holding on, there were no flights found with your given requirements.

USER: Ok, no issues. Thanks for your response.

ASSISTANT: Thanks for approaching us.