You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best can I aid you?

USER: Help me in booking a ticket with the name of William Thomas to do the Exploratorium.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: To reach the place, I have to start my journey on 07/08. 07/10 is my return date.

ASSISTANT: Please share your airport codes?

USER: Chicago, ORD and San Francisco, SFO are my codes.

ASSISTANT: Can I know your price limit?

USER: Price limit is 500.

ASSISTANT: Sorry, we found a flight with price 700.

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your helping hand.

ASSISTANT: Thank you for reaching us.