You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Reserve a ticket with the name of Michael White in a direct flight.

ASSISTANT: Sure, help me with the airport codes?

USER: I need to visit Las Vegas, LAS to attend a wedding by booking a ticket from Seattle, SEA.

ASSISTANT: When are you willing to travel please let me know?

USER: 05/05 is my starting date of journey. After completion of my trip I will be back on 05/07.

ASSISTANT: We do not found any flights running in your desired routes.

USER: Not a issue, I will choose another flight. Thank you.

ASSISTANT: Thank you for reaching us.