You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking for a flight from IAH to OAK, can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are 19 and 21 of Aug.

ASSISTANT: May I know your connection limit?

USER: I am willing to travel in a single connecting flight.

ASSISTANT: Is there any class preference for you?

USER: I prefer to travel in economy class.

ASSISTANT: Your good name please.

USER: My name is Carolyn Martinez.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the morning.

ASSISTANT: We found an airline: United Airlines, flight number: 1020 and price is 200 with one connection. Shall I proceed to booking?

USER: Yes.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.