You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to book a ticket from IAH to IAD to attend workshop, can you help me in booking?

ASSISTANT: Sure, when would you like to travel?

USER: I am departing on Oct 29 and return on Oct 31.

ASSISTANT: Do you have any airline preferences?

USER: I prefer to travel in normal-cost airline.

ASSISTANT: May I know your name please?

USER: My name is Mary Walker.

ASSISTANT: We found a flight in an airline Hawaiian with 1020 number having a single connection price of 300. Shall I reserve it?

USER: I need a flight with connection limit 0.

ASSISTANT: Sorry, single connection is available right now.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.