You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Eric Lee this side, can you reserve a seat for me from SEA to OAK?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: Sure, my planned dates are from 10/28 and 10/30.

ASSISTANT: Do you have any price limit?

USER: Sure, my price limit is 1000. And I am looking for a direct flight.

ASSISTANT: Sorry, there is no direct flight on your preferred dates. Thank you for choosing us.

USER: It's ok, thank you for your service.

ASSISTANT: Welcome.