You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Thomas.

ASSISTANT: How can I help you?

USER: I am planning to visit Houston, can you please book me a ticket from DCA to IAH?

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

USER: My planned dates of journey are from 12/08 to 12/10.

ASSISTANT: Ok, give me a while.

USER: Sure, take your own time.

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

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1027, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.