You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a normal cost airline for my journey, can you please reserve a flight ticket from HOU to PHL for my business meeting?

ASSISTANT: Sure, but when your planning to make your journey?

USER: I am planning to start my journey on Nov 17 and please book my return ticket also on Nov 19.

ASSISTANT: Do you prefer any specification regarding class?

USER: I will prefer economy class for my journey.

ASSISTANT: Can you please share your timings?

USER: I can manage with any timings.

ASSISTANT: Sorry, no flights available on your route.

USER: Oh! Sad to hear that.

ASSISTANT: May I know your name?

USER: Sure, my name is Helen Parker.

ASSISTANT: Thank you for reaching us.

USER: Welcome.