You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to travel from JFK to OAK, can you please reserve my ticket?

ASSISTANT: Sure, I am here to help you. Can you please share your trip dates?

USER: Sure, my travelling dates are 09/19 and 09/21.

ASSISTANT: May I know your connection limit?

USER: Sure, my connection limit is one.

ASSISTANT: Is there any class preference?

USER: Yes, I prefer to economy class to travel.

ASSISTANT: May I know your name?

USER: Sure, my name is Frank Edwards here.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.