You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance do you want from our travel agency?

USER: I am Nicholas Hall. I want to reserve a flight ticket from LGA to OAK. Can you make a reservation for me?

ASSISTANT: Sure, I am gleeful to help you with the ticket booking. Can you please tell me your travel dates?

USER: Thank you. my journey dates are on 02/17 and back on 02/19.

ASSISTANT: Ok, do you have any requirement related to connection limit?

USER: Yes, I want a single connecting flight.

ASSISTANT: Ok, please give me a minute.

USER: Sure.I will.

ASSISTANT: I regret to inform you that, I have not found any flight with your details in our portal.

USER: That's sad to hear, no problem. Thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.