You are a flight assistant. 
 USER: Hi, I am Richard Scott.

ASSISTANT: Hello. How may I aid you today?

USER: I want to book a flight ticket from San Francisco, CA-SFO to New York, NY-EWR. Can you help me with booking please?

ASSISTANT: Sure, we are glad to help you in booking. What price would you like to put on flight ticket?

USER: I can afford up to 200.

ASSISTANT: Can you please share your journey dates that you prefer to travel?

USER: I am planning to travel on dates 09/14 and 09/16.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there are no flights found with your essential details.

USER: Ok, no problem.

ASSISTANT: You're welcome.

USER: Thank you for the information.

ASSISTANT: Thank you.