You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please book me a ticket from EWR to HOU?

ASSISTANT: Sure, may I know your good name?

USER: I am Kimberly Lee.

ASSISTANT: Could I have your journey dates, please?

USER: My journey dates are from June 25th to June 27th.

ASSISTANT: Please let me know your connection limit?

USER: I want a single connection in between my journey.

ASSISTANT: Do you have any class preference?

USER: Yes, I prefer a economy class to travel.

ASSISTANT: Is there any other specifications?

USER: I want to return in the evening.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available are per your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.