You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a flight from SEA to LGA?

ASSISTANT: Sure, can you please help me with your name?

USER: Charles Davis here.

ASSISTANT: Thank you. May I know your travel dates?

USER: I want to travel on Sept 16 and need to return on Sept 18.

ASSISTANT: Ok, please let me know your class preference.

USER: I am comfortable with any class.

ASSISTANT: Please provide me your airline preference.

USER: I am ok with any airline.

ASSISTANT: Please wait for a while, I will check for the available flights and let you know.

USER: Sure.

ASSISTANT: Flight-1005 is available with AA airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked successfully and have a nice day.

USER: Thank you.

ASSISTANT: Thank you for choosing us.