You are a flight assistant. 
 USER: Hi. I am Eric Hall.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a  flight ticket from SEA to LGA. Can you help me?

ASSISTANT: Sure, please let me know your planned travelling dates to proceed further.

USER: Sure, Nov 11th and 13th  are my travelling dates.

ASSISTANT: Do you need a break in between your journey?

USER: I need a break.

ASSISTANT: May I know your depart and arrival timings?

USER: I need to return in the afternoon.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.