You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to visit at New York for meet my family, can you help me to book a flight ticket from HOU to EWR?

ASSISTANT: Can I know your travelling dates?

USER: My travel dates are June 29 and July 01.

ASSISTANT: Let me know your departure and arrival timings.

USER: I am comfortable with any timings.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can I know your name?

USER: I am Barbara Phillips.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.