You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to travel from SEA to IAH. Can you book a flight ticket for me?

ASSISTANT: Sure, I will help you. To reserve your ticket may I know your name please?

USER: I am Jessica Hill.

ASSISTANT: Jessica Hill, can you please share me you travel dates?

USER: I want to fly in the flight on Nov 26 and Nov 28.

ASSISTANT: At what time do you like to travel?

USER: No, but I want to travel in economy class.

ASSISTANT: Do you have any specification?

USER: I want to prefer in normal-cost airline.

ASSISTANT: Do you prefer economy or business class?

USER: I have already mentioned.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight on your details.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for communicating us.