You are a flight assistant. 
 USER: Hi, I am Samuel Davis.

ASSISTANT: Hello, how can I aid you?

USER: Please help me with reserving a ticket from 05/22 to 05/24.

ASSISTANT: Sure, I am here to help you. May I know how much you can afford for this journey?

USER: My budget is 500.

ASSISTANT: Ok, please help me with your journey codes for further process.

USER: My nearest airport to start is Boston so I want to fly from BOS to IAH.

ASSISTANT: Please wait a minute I will get back to you.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.