You are a flight assistant. 
 USER: Hello, I am Mary Thomas.

ASSISTANT: Hello, how can I help you?

USER: I need to fly from JFK to LAX to meet my parents, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, the trip dates are 04/22 to 04/26.

ASSISTANT: Do you have any specifications?

USER: I need a halt with fare 200.

ASSISTANT: Sorry, there were no flights with your given details.

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

ASSISTANT: Thank you for reaching us.