You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I want to meet my friends in Seattle. Can you help me in booking flight ticket from IAH to SEA?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Dec 10 to 12.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preferences?

USER: I want to fly in normal cost airline.

ASSISTANT: Please share me your other specifications.

USER: My return should be in the evening.

ASSISTANT: For booking, we need your good name, please provide it.

USER: Myself Shirley Parker.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for communicating with us.