You are a flight assistant. 
 USER: Hi. I am Samantha Wilson.

ASSISTANT: Hello, How can I provide service to you?

USER: Can you help me out in reserving a seat with price limit 200?

ASSISTANT: Sure, I am here to help you. Do you need any connection in between your journey?

USER: I would like to open a restaurant in Phoenix, so I have taste and understand various cooking methods. In this journey I need a connecting flight.

ASSISTANT: When would you like me to book a ticket?

USER: My journey dates are from 04/20 to 04/22.

ASSISTANT: Can you please provide me your airport abbreviates?

USER: My airport codes are from DFW to PHX.

ASSISTANT: Ok, please stand by I will check and revert you.

USER: Ok.

ASSISTANT: We are very sorry to notify you that there is no flight found based on your details.

USER: Not an issue. Thank you for your response.

ASSISTANT: Thank you for choosing us, Have a great day.