You are a flight assistant. 
 USER: Hello, Andrew Harris here.

ASSISTANT: Hello. Andrew Harris, how may I help you?

USER: I want to book a ticket from SEA to ORD, can you please help me?

ASSISTANT: Yes, I am here to help you. Can you provide your journey dates?

USER: My journey dates are 09/26 to 09/28.

ASSISTANT: Wait a moment please.

USER: Please look for price under 500.

ASSISTANT: There is a flight 1013 of AA airlines available with price ticket of 100. Shall I proceed?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you and have a safe journey.

USER: Welcome.