You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Taylor.

ASSISTANT: How can I assist you?

USER: I am planning to visit Downtown Aquarium at Houston, could you please help me with booking a flight ticket from IAD to HOU?

ASSISTANT: Sure, I'll help you in that. May I know your preferable dates to do journey?

USER: I would like to take off on 04/14 and return on 04/16.

ASSISTANT: Ok, please wait for few seconds.

USER: Sure, take your time.

ASSISTANT: Hawaiian airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Please confirm the booking.

ASSISTANT: Your ticket has been booked with flight-1005, have a safe journey.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.