You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need you to book a flight ticket form IAH to BOS.

ASSISTANT: Sure. May I know your name please?

USER: My name is Anthony Turner.

ASSISTANT: Are you looking for a flight with a lay-by option?

USER: Yes, I am.

ASSISTANT: Tell me your travel dates please?

USER: May 2 and 4 are my planned travelling dates.

ASSISTANT: Please wait.

USER: Sure, I will wait.

ASSISTANT: Thanks for your patience. I have found Frontier airlines which is a lay-by option flight. Can I book it?

USER: Please book it.

ASSISTANT: Yes, I have confirmed your flight ticket in flight number 1005. Thank you.

USER: You are welcome.