You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Margaret Robinson. I am looking for a flight from DTW to IAH, can you help me out?

ASSISTANT: Nice to meet you Margaret. Sure, tell me your travel dates please?

USER: My trip dates are from Mar 5th till Mar 7th.

ASSISTANT: Please wait.

USER: I need a normal-cost airlines.

ASSISTANT: Sure. Sorry presently there is no flight available in the normal-cost airline.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.