You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Samantha Campbell.

ASSISTANT: Samantha, how can I assist you today?

USER: Can you please help me with flight ticket booking from DCA to LGA?

ASSISTANT: I am happy to help you, can you please let me know your trip dates?

USER: Sure, I need to travel on dates of 08/16 and 08/18.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Samantha, there are no flights available on your given dates.

USER: It's ok fine, no problem. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: Welcome.