You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Patricia Young here.

ASSISTANT: Nice to meet you Patricia.

USER: I want to attend a Seminar in San Francisco. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, tell me your travel dates please?

USER: My travelling dates are 09/05 and 09/07.

ASSISTANT: Now share your airport codes please?

USER: My airport codes are SEA and SFO.

ASSISTANT: May I know your departure and return time please?

USER: I want to return on morning.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Please wait.

USER: Ok, I will wait.

ASSISTANT: Sorry there no flights available in the morning time.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.