You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Catherine Parker here.

ASSISTANT: Parker, how can I assist you?

USER: I want to book a flight to meet my boss in Seattle, WA - SEA, can you book a flight from SFO?

ASSISTANT: Sure, can you please let me know your travel dates?

USER: My travelling dates will be from 10/01 to 10/03.

ASSISTANT: Ok, please wait for a while. Sorry Parker, there are no flights available on your preferred dates.

USER: Ok, no issues with it. Thank you for helping me.

ASSISTANT: You are welcome and thank you for choosing us.

USER: Most welcome.