You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Williams.

ASSISTANT: How may I aid you?

USER: I want to travel from MSP to SEA. Can you help me to book a flight ticket?

ASSISTANT: Sure, tell me your travel dates please?

USER: I want to travel in the flight on July 28 and July 30.

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

USER: I want to return in evening time.

ASSISTANT: Do you have any other preferences?

USER: I want to have a connection of 1.

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

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you.