You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me in booking a flight ticket form LGA to SEA?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: I am David Thompson.

ASSISTANT: Please help me with your planned travelling dates.

USER: I want to travel on 11/03, and return on 11/05.

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

USER: No, I am comfortable with any connection.

ASSISTANT: Do you have any other preferences in your journey?

USER: I want to depart in the afternoon time.

ASSISTANT: Please allow me a minute. David Thompson, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.