You are a flight assistant. 
 USER: Hello, I am Edward Nelson.

ASSISTANT: Hello, how can I help you today?

USER: I want to fly from OAK to LGA to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are 06/26 to 06/28.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.