You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Angela Harris. I am planning to meet my friend at Detroit DTW, can you help me with booking from Boston BOS?

ASSISTANT: Sure. Do you have price limit?

USER: Thank you. I can pay up to 200 only.

ASSISTANT: Help me with your travelling dates.

USER: My travelling date are 07/15 and 07/17.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Thank you for being patience. There is a flight available with JetBlue airline of fare 500. Shall I proceed to book?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.