You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Andrew Wilson from Seattle.

ASSISTANT: Wilson, how can I assist you today?

USER: Can you help me in making a flight ticket reservation under the fare of 200?

ASSISTANT: Sure, I'm here to help you always. Can you please let me know on which route are you planning to do journey along with your airport codes?

USER: I am very much fascinated about space related stuff, fortunately I got an opportunity to visit Space Center at Houston. Can you please help me in making a reservation from Seattle, SEA airport to Houston, IAH airport?

ASSISTANT: Definitely, may I know on which date are you planning to fly from your location to Houston?

USER: I have got an invitation on 03/17. So I would like to start my journey on 03/16 from my place.

ASSISTANT: Ok, do you wish me to book the return ticket also? If yes, please mention your return date also.

USER: Yes, I would like to return from Houston on 03/18.

ASSISTANT: Thank you for giving the information Wilson. I'll be very thankful to you, if you wait for few seconds.

USER: Sure, take your own time and find 1 connection limit flight on this route.

ASSISTANT: I'm very sorry to inform you that all flights are already reserved on those dates.

USER: Oh! That's so sad to hear. I will find any alternate for this trip.

ASSISTANT: That's fine, Wilson.

USER: Thank you for providing information.

ASSISTANT: You are welcome, thank you so much for opting us to serve you, have a great day.