You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Lopez.

ASSISTANT: How can render you?

USER: As I like cars very much, I am planning to visit cable car museum.So, can you reserve me a flight ticket from Philadelphia, PHL?

ASSISTANT: Sure. Let me know your travelling dates to check the flights.

USER: I would like to fly on 03/31 and return on 04/02.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 200.

ASSISTANT: To proceed booking I need your destination code.

USER: San Francisco, SFO is my landing point.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: Spirit, flight number:1009, price 100, 1 connection. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for assisting me.

ASSISTANT: Thank you, have a pleasant day.