You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to book a flight in economy class to reach Oakland?

ASSISTANT: When you are willing to travel?

USER: I am willing to start on Feb 26th and return on Feb 28th.

ASSISTANT: Do you have any connection limit?

USER: I prefer it.

ASSISTANT: Can you help me with your airport codes?

USER: My airport codes are LGA - OAK.

ASSISTANT: May, I know your good name?

USER: Sure, my name is Amy Collins.

ASSISTANT: Please wait for a moment.

USER: Make sure that I would like to depart in evening time.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.