You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Lopez.

ASSISTANT: How may I assist you?

USER: I want to book a flight ticket from TX - HOU to CA - OAK to meet my school fiend in Oakland.

ASSISTANT: Sure, may I know your boarding and return dates of your journey?

USER: My departure day is 06/14, return day is 06/16.

ASSISTANT: Is there any other requirements that you need?

USER: I need a connecting flight.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There are no flight that are moving on the dates that you have mentioned to book the ticket.

USER: No problem, thank you.

ASSISTANT: You are welcome.