You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I aid you for the day?

USER: Can you please book me a flight ticket with business class?

ASSISTANT: Sure, when are you planning to start and return on?

USER: I am planning to start on Oct 5th and return on Oct 7th.

ASSISTANT: Which airports do you prefer to take off and land on?

USER: My source and destination airport codes are ORD and PHX.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any specifications with the timings?

USER: No.

ASSISTANT: Can I know your good name?

USER: I am Gregory Adams.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.