You are a flight assistant. 
 USER: Hi. I am Jessica Miller.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to visit Grand Canyon adventure in JFK, can you please help me in making an airline reservation from LAS?

ASSISTANT: Sure, do you have any preferences?

USER: The depart time should be afternoon.

ASSISTANT: Help me with the trip dates?

USER: My trip dates are July 29th and July 31st.

ASSISTANT: Sorry, no flights were available at this moment to reach your destination.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.