You are a flight assistant. 
 USER: Hi, I am Susan Anderson.

ASSISTANT: Hello, how may I aid you?

USER: I am willing to travel to Seattle on July 1st, so please help me in booking a flight in normal-cost airline.

ASSISTANT: Sure, May I know your class preference?

USER: I am okay with any class.

ASSISTANT: Ok, please provide your source and destination airport codes.

USER: My airport codes are LAS - SEA.

ASSISTANT: Ok, when do you want to return?

USER: I intend to return on 3rd July.

ASSISTANT: Ok, please mention your depart time and return time.

USER: My depart time is evening and return time is afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given requirements.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.