You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a connecting flight ticket to attend an event from WA. Can you help me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Apr 20th and 22nd are my travelling dates.

ASSISTANT: Please provide your airport codes.

USER: SEA and LAS are my airport codes.

ASSISTANT: Do you have any preferences about flight connections?

USER: I would like to depart in the morning.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please mention your name.

USER: Gregory Lopez.

ASSISTANT: There is no flights found under your preferable details.

USER: No issue. Thank you for the information.

ASSISTANT: Welcome, have a great day.