You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you today?

USER: I am Alexander Walker. Can you please book a flight ticket from Seattle, SEA to Houston, IAH?

ASSISTANT: Sure, help me with your travel dates.

USER: My journey dates on 11/16 and 11/18.

ASSISTANT: Ok, do you have nay other specifications?

USER: Price should be up to 200. I need a connecting flight.

ASSISTANT: There is a flight with single connection in UA airlines with a fare of 200 and the flight number is 1000. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.