You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I amend you today?

USER: Will you please book a seat with my sister's name Laura Thomas?

ASSISTANT: Sure, we are mirthful to aid you.

USER: Thank you.

ASSISTANT: Where she is travelling from?

USER: Houston,IAH is source.

ASSISTANT: Let me know the destination code.

USER: Washington, DCA is her destination.

ASSISTANT: When are you willing to travel?

USER: She is travelling on 09/02 to meet my grandmother on her 100th birthday. She will return on 09/04.

ASSISTANT: Thanks for the details.

USER: Ok.

ASSISTANT: There is a plane 1000 of Hawaiian airline with the fare of 100. Shall I proceed?

USER: Sure, you can.

ASSISTANT: Reservation is done.

USER: Thank you.

ASSISTANT: Thank you for availing us.