You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How shall I help you?

USER: I am Andrew Collins.

ASSISTANT: Ok.

USER: Can you help me in booking from SFO to PHX?

ASSISTANT: Sure. Please provide me travel dates.

USER: My travelling dates are 11/11 to 11/13.

ASSISTANT: Any specifications?

USER: I need a connecting flight with fare 500.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: No flights are available with your requirement.

USER: No issue, thank you for checking.

ASSISTANT: Thanks.