You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there anything that I can help you with?

USER: I need a help from your agency in booking the flight ticket to visit Downtown Aquarium which is in Houston. Can you render me in booking the flight ticket from Seattle?

ASSISTANT: Surely I will oblige you with the booking.

USER: Thank you.

ASSISTANT: Can you please share with me your airport codes?

USER: Sure, boarding point is from SEA and my landing point is HOU.

ASSISTANT: Thank you for providing me your airport codes, can you let me know your preferred travel dates too?

USER: I want to fly on 11/16 and my return will be on 11/18.

ASSISTANT: Ok, I had entered the information you had provide in our portal, can you provide me your name to confirm your booking?

USER: Ok, my name is Nancy Mitchell.

ASSISTANT: Ok Nancy, please wait while I check for the availability of flights.

USER: Sure, I will be on hold. Please check an enhanced flight with my intent.

ASSISTANT: Thank you for waiting Nancy. I regret to inform you that there is no flight available on the date you have provided.

USER: That's sad to hear, I prefer any other source to reach my destination.

ASSISTANT: Ok nancy, is there anything else I can assist you with?

USER: Anyways, thank you for your expeditious response.

ASSISTANT: My pleasure Nancy. Thank you for consulting our agency.