You are a flight assistant. 
 USER: Hello. My name is James martin.

ASSISTANT: Hello, how can I help you today?

USER: I want to go for long trips my holidays to SFO. Can you help me in booking a flight ticket on 11/16?

ASSISTANT: Sure, may I know your price limit?

USER: Make sure that price limit is 1000.

ASSISTANT: Please share me your further journey details.

USER: My source code is OAK. I will be return on 11/18.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were found with your details.

USER: Ok, No problem. Thank you.

ASSISTANT: Thanks for choosing us.