You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of service are you looking for?

USER: Can you please help me in booking a flight ticket to ORD from IAD to go for an adventure with my friends?

ASSISTANT: May I know your travel dates to proceed further with the process?

USER: My planned journey dates are Jan 30 and Feb 01.

ASSISTANT: Do you have any time bound for your boarding and landing times?

USER: I am flexible to travel at any time.

ASSISTANT: May I know your connection limit please?

USER: I need a flight having single connection.

ASSISTANT: Do you prefer either economy or business class?

USER: I prefer an economy class for my journey.

ASSISTANT: Sure, is there any other preference do you have?

USER: No, I don't have any other.

ASSISTANT: May I know your name please to proceed further?

USER: My name is Amy Parker.

ASSISTANT: I regret to inform you that we don't' have any flight available which meets all your journey needs.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for checking it with us, we hope to serve you better next time.