You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Garcia.

ASSISTANT: How may I help you?

USER: Please help me to book a flight ticket from HOU to attend an interview in LAS.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I would like to depart on June 5th and my return date will be on June 7th.

ASSISTANT: Do you have any other specifications?

USER: I need to return in the afternoon.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for reaching us.