You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Gary Hill, I want to book a flight on June 21 to meet my parents. Can you help me with booking?

ASSISTANT: Sure, please share your source and destination airport codes.

USER: I will fly from DFW to PHX.

ASSISTANT: May I know when are you planning to return?

USER: I will return on 23 June.

ASSISTANT: Do you prefer either economy or business class?

USER: I am ok with any class.

ASSISTANT: Please let me know if you have any other preference.

USER: I need a connecting flight.

ASSISTANT: Sure, we have a connecting flight from Spirit airlines, number 1022 and the fare is 100. Shall I proceed?

USER: Sure.

ASSISTANT: Your seat is reserved in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.