You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I need to book a flight ticket from SEA to OAK to enjoy fun filled vacations.

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: Sure, my journey dates are Apr 20 and Apr 22.

ASSISTANT: Ok, please mention your name.

USER: Sure, Gregory Lopez here.

ASSISTANT: Ok, do you have any connection limit?

USER:  I prefer maximum 1 connection in between journey.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Welcome, have a nice day.