You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Adams here.

ASSISTANT: How can I assist you?

USER: I want to participate in Boston marathon, so please book my ticket from Houston.

ASSISTANT: Sure Lisa, can I know the travel dates please?

USER: My itinerary dates are 05/27 and 05/29.

ASSISTANT: Could you please provide the airport codes?

USER: My genesis and terminus airport codes are IAH and BOS.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked with flight number 1017.

USER: Thank you for assisting me.

ASSISTANT: Thank you for approaching us.