You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I aid you?

USER: I would like to book a flight ticket from NY-EWR to CA-SFO, can you help me with booking?

ASSISTANT: Sure, I am mirthful to help you. Kindly mention your travelling dates?

USER: My travelling dates would be from 10/01 to 10/03.

ASSISTANT: Do you have any more requirements?

USER: I need a connection in between travelling. The price should be under 500.

ASSISTANT: Ok, wait for a minute, I will revert you with the availability.

USER: Ok.

ASSISTANT: Thanks for your time. We are sorry to inform you that, we did not find any flights with your preferred dates.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us, Have a great day. May I know your name?

USER: I am Michael Lee.

ASSISTANT: Thank you.