You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sharon Lopez here.

ASSISTANT: Sharon Lopez, how may I aid you?

USER: I'm planning to visit Houston, can you please book a ticket from DCA to HOU?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, my planned departure and return travel dates are 25th and 27th of January.

ASSISTANT: Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Delta airlines with flight 1027 is providing service with a connecting flight.

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: Your ticket is reserved.

USER: Thank you so much for your help.

ASSISTANT: Thank you for approaching us.